AP invoice defaulting not primary Employee Bank Account for expense payments

Summary:

We have employee expense and with 2 expense bank. 1 bank is tagged as primary bank, 1 bank is not primary but also active.

When the expense has been imported to AP invoice, it has a default bank account that is not the one tagged as Primary Bank. Is there other conditions why the primary bank is not defaulted in AP invoice - installment or payment section?

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