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Partial Purchase Order Migration with Expected Cost Posting Enabled in Business Central (NAV TO BC)

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In Microsoft Dynamics 365 Business Central, when “Expected Cost Posting” is enabled, what is the recommended approach for handling partial Purchase Order migration?

Specifically:

How should we migrate partially received Purchase Orders (i.e., where receipts are posted but invoices are pending)?

What is the correct sequence for creating Purchase Receipts and Purchase Invoices during migration to ensure proper cost flow?

How are Expected Cost entries handled during this process, and how do we avoid duplication or mismatches in inventory valuation?

Are there any best practices for managing interim accounts (Expected Cost / Accrued Purchases) during migration?

Should Expected Cost Posting be temporarily disabled during migration, or can it be safely managed while migrating open transactions?

Any guidance, best practices, or real-world experiences would be greatly appreciated.

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Dynamics 365 Business Central migration

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OussamaSabbouh 13,852 Super User 2026 Season 1 on at

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Hello,

If Expected Cost Posting is enabled, the safe approach is to migrate a partial PO in the same status it really has and keep the normal posting flow: post the receipt first, then post the invoice later against that receipt, because BC creates expected cost on receipt and then clears the interim/expected cost accounts when the invoice is posted with the actual cost. The main thing to avoid is double counting: don’t bring the same stock/value in as opening inventory and also recreate the historical receipt for it, because that will distort inventory and interim balances. In practice, most teams either migrate open PO balances only or very carefully recreate only the still-open receipt/invoice state, with reconciliation of interim accounts afterward. So no, you usually don’t need to disable Expected Cost Posting, but you do need a controlled cutover design so receipts, invoices, opening inventory, and accrued purchases don’t overlap.

Regards,
Oussama Sabbouh

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Gerardo Rentería Ga... 25,977 Most Valuable Professional on at

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Hi

Excuse me, what do you mean by "partial Purchase Order migration"? You won't be doing a full data migration? Because if you were, it would mean everything would be transferred exactly as it is now.
Or are you working with a cutoff date?

Best

Gr

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