Secondary Ledger Addition to Existing Primary Ledger

Hi All,

We are in process to add secondary ledger to existing primary ledger at sub-ledger conversion level, we will run SLA Secondary/ALC Ledger Historic Upgrade. However we want to know the effect of existing transactions before we finalize the approach like:

1.If we have an existing unpaid invoice which is accounted and posted but after adding secondary ledger we have done the payment and accounting of the same. Does at payment work bench we will be able to see the accounting of the payment for secondary ledger?

Does the Payment accounting entry will be posted to secondary ledger?