How to default the revenue account from Memo Line

Current Oracle Cloud Fusion

Modules : Projects and AR Modules 

SETUP : In Auto Accounting For all "Revenue" derivations it is as Transaction-Type

Now I have Memo Lines setup that has the independent Rev Account

"NO INVENTORY Module"

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Note when I create any Project Invoice and Import using the AutoInvoice Rules it works

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When I create any Invoice Manual in Billing and use the Memo Lines ..... "Memo Lines Default Rev Account does not populate " it uses the Transaction-Type Rev Account

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Q: How to handle this ...any setup can handle it

or

Do I have to modify the SLA to do so .... IF yes , any direction will help how to modify the SLA