Closed Block Migration for Insurance Buyers: Data From Tape to Converted File
We tie the seller’s data tape to your converted policy file, line by line, before the first filing.
Closed block migration for insurance is the data work that moves an acquired or reinsured block of in-force policies onto the buyer’s admin platform, then proves each policy, face amount and tax field arrived intact. KORE1 does this work alongside Khurram Tehseen, a data and AI consultant, and hires the engineers and analysts who finish it.
Last updated: October 12, 2026
Khurram has a line. Every block acquisition is a data project wearing an M&A costume. The bid gets priced off a data tape the seller cut on one date, and the conversion runs months later on records pulled from a different system, by different people, while deaths, lapses and reinstatements kept happening underneath both.
Nobody owns that gap. The deal team is gone. The seller’s admin staff are working out a transition services agreement with an end date, and your actuaries are waiting on a block they can value. KORE1 works that gap with its insurance IT staffing team, an insurance staffing agency desk for the business seats, a method borrowed from ERP data migration, and engineers hired through IT staffing services.
One Closed Block, Walked From Data Tape to Converted File
The acrylic block is the costume, the tombstone a buyer keeps on a shelf after closing. The table is the project. Same invented block, counted forward from the seller’s tape to the first month on the new platform.
What the tombstone says. It repeats the tape.
| Line | Policies | Face, $M |
|---|---|---|
| On the seller’s data tape, December 31, 2025Tape | 212,400 | 38,240.0 |
| DeathFiled line | −1,912 | −214.6 |
| Lapse and surrenderFiled line | −3,288 | −512.3 |
| Maturity and expiryFiled line | −640 | −61.0 |
| RevivedFiled line | +205 | +31.8 |
| Riders the tape counted as policiesDeal line | −2,130 | −168.4 |
| Policies the seller kept at signingDeal line | −1,050 | −96.2 |
| Expected in the converted file | 203,585 | 37,219.3 |
| Found in the converted file, May 2026 | 203,170 | 37,151.2 |
| Not explainedNobody’s line | 415 | 68.1 |
Example only. The block, the dates and every figure are invented.
Filed lines have a home. Every life carrier reports death, lapse, surrender, maturity, expiry and revival movements on the Exhibit of Life Insurance in its annual statement, by number of policies and amount of insurance, so a seller’s admin team knows how to count them.
Deal lines come from the transaction itself, and no form asks for them. Look at the tombstone again. Still 212,400. The 415 policies on the last line are the actual job.
The tape answers the pricing question. Conversion asks a different one.
Why a Closed Block Migration Starts at the Data Tape
Tapes are built for pricing. A typical one carries a row per coverage with issue age, sex, risk class, face amount, premium mode and a plan code, frozen at one valuation date, and that is exactly what a pricing actuary wants on bid day.
Conversion needs the rest. Beneficiaries, mailing addresses, policy loans, section 1035 exchange history, MEC flags and every premium paid since issue have to land in a target layout built for somebody else’s products, out of an admin system the buyer may never have logged into.
We replay the tape first. On the invented block above, rebuilding the December 31 tape from the seller’s own policy records is what surfaces the 2,130 riders sitting in it as policies. Khurram works that way on every engagement, proving a pipeline on something that already happened, and a buyer who does it before signing can still write the rider fix into the purchase agreement.
The Numbers Around Closed Block Migration in Insurance
- 137 Private equity owned U.S. insurers at year-end 2024 Up from 90 in 2018, per the NAIC Capital Markets Bureau
- 96% Of those insurers’ $704.3 billion in cash and invested assets held by life companies Same NAIC report, published August 2025
- 24 months Before a final notice can turn a policyholder’s silence into consent NAIC Assumption Reinsurance Model Act, where adopted
- 92% Share of KORE1 hires still working a year after placement All KORE1 desks combined
The NAIC’s private equity ownership report builds its count by hand, starting from Schedule Y ownership disclosures and then working through outside sources and what state regulators share. It says the count keeps evolving. Fair enough.
The consent clock only runs when a block moves by novation. Many move by indemnity reinsurance instead, which shifts the economics and leaves the policies, and sometimes the administration, with the seller. Different paperwork, same data problem.
How We Run a Closed Block Migration, Step by Step
Order matters more than tooling. Each step leaves behind a count the next one has to tie to, so by conversion weekend one question is left, the one on the last line.
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Step 1
Replay the tape
Rebuild the seller’s tape from its own records as of the tape date and tie counts and face amounts line by line.
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Step 2
Write the record spec into the deal
The fields, formats and monthly files the seller owes go into the transition services schedule, not a later email.
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Step 3
Map riders, plans and tax history
Coverages roll up to policies, plan codes resolve to one list, and section 7702 and 7702A history travels with each contract.
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Step 4
Walk the count every month
From closing to conversion, each monthly file ties to the last one, and anything unexplained gets a named owner.
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Step 5
Replay the seller’s last valuation
Converted records reproduce the seller’s seriatim reserve listing, policy by policy, before anyone values the block on the new system.
Some of the fields a conversion needs were last touched by hand.
Tax History, Riders and Addresses Decide a Block Conversion
Start with tax. Under section 7702A, a life policy that fails the seven-pay test becomes a modified endowment contract, and a material change restarts the test. Premium history is part of the policy, then. Drop it in conversion and the new admin system can’t tell a clean contract from a MEC.
Riders come next. A waiver of premium or a term rider on a spouse can show up as its own row on a tape and as a benefit on the base policy in the target system, which is exactly how 2,130 phantom policies get into a deal toy. Somebody has to decide, rider by rider, what counts as a policy. When a rider survives only on a scanned application, turning old policy paperwork into checked fields comes first.
Then addresses. Where a block moves by novation in a state following the NAIC’s Assumption Reinsurance Model Act, the transfer starts with a notice sent first-class to each policyholder’s last known address, plus a response card. Bad addresses become schedule risk.
Where the block stays with the seller under reinsurance, the policy record lives in a life and annuity data operations problem for years, and every model built on the converted block eventually needs governance for the models trained on it.
Who Carries a Closed Block Conversion
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Writes the spec
Business analyst
Turns the target layout into a field-by-field request and chases every answer the seller still owes.
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Moves the history
ETL developer
Extracts policy, rider and premium history from the seller’s files and loads it into the new layout.
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Explains the gap
SQL developer
Queries both systems until every unmatched policy on the walk has a reason and an owner.
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Shapes the record
Data architect
Designs the single policy record the converted block lands in, riders and tax fields included.
Most of this work ends when the block converts, so contract staffing fits the build and direct hire fits whoever owns the block in year two. Whole-platform moves are a different job. KORE1’s ERP data migration specialists and the post-acquisition systems integration bench take those, on the transition services schedule that runs the rest of the deal. If the seats are still unclear, Khurram’s four-week data foundation diagnostic shows where the conversion days actually go.
Common Questions
What does closed block migration mean in insurance?
It is moving a block of in-force policies that are no longer sold onto a new administration platform or TPA, and proving every policy, rider and value arrived. Most come with an acquisition or a reinsurance deal. Some are simply a carrier leaving an old system behind.
Is this the same closed block a demutualized insurer reports?
No. When a mutual insurer demutualizes, its closed block is a legal segregation of participating policies set up to protect their dividends, and MetLife’s, created in April 2000, is expected to last more than 100 years. In deal talk a closed block just means business nobody sells anymore.
Our data tape priced the deal fine. Why replay it?
Because pricing and conversion read the tape differently. A tape can be right for pricing and still count riders as policies or skip premium history. Replaying it against the seller’s own records shows which, while there is still a purchase agreement to fix it in.
Does premium history really have to come across?
Yes, for life policies. Section 7702A turns a policy that fails the seven-pay test into a modified endowment contract and restarts the test after a material change, so the new admin system needs the history to know which contracts are which.
Does assumption reinsurance change the data work?
Mostly at the front. In states following the NAIC model act, a novation starts with a notice mailed to each policyholder’s last known address, so address quality becomes a deadline. Under indemnity reinsurance no letters go out, but the buyer may read its block through monthly files the seller produces.
How long does a block conversion take after closing?
Usually as long as the seller is contracted to administer it. Loading is the short part. Explaining records eats most of the calendar, the unmatched policies and riders that need a decision, so starting the monthly count at closing shortens the end of the project more than any tool does.
Can KORE1 staff the conversion team?
Yes, on contract or direct hire. KORE1 recruits the business analysts, ETL and SQL developers and data architects who carry a block conversion, closes most IT searches inside roughly 17 days, and has been recruiting since 2005.
Replay the Tape Before You Sign
Tell us the block, the seller’s admin system and the date on the tape. We’ll say plainly what a replay would take.
Khurram Tehseen also takes block questions directly through LinkedIn.
