Thanks again for responding it's very much appreciated. Unfortunately you have not address my question and your suggestion is not a solution to the issue. My apologies again if I am not correctly communicating my issue. I will try again.

Before I do, please note that I am the accountant and I am pretty familiar with QuickBooks. For example, I know how to delete and rebuild assemblies as you suggested.

Here is my issue restated as a question:

Why doesn't the general ledger account that was applied to an EXISTING Build Assembly transaction not change when I change the general ledger account assigned to the Items that were used on that Build Assembly?

Or... stated differently

How do I get the general ledger account that was applied to an EXISTING Build Assembly transaction to change when I change the general ledger account assigned to the Items that were used on that Build Assembly?

To be extra clear... I only want to know how to get the account changes I make to Items to also change the account used on the transactions for Build Assemblies.

If the answer is that is not possible because of how QuickBooks works, please tell me that and I will do what is needed accordingly. However, it is possible, I'd appreciate knowing how to do that.

Thank you!