Stop an OTL Time Line from Importing to Projects

Hello all,

We have a requirement to have the ability to add an extra payment to an employee at the same time as Time Entry which we normally pay out of myExpense.

We're contemplating solutions and wanted to pose the question, first has anyone encountered this and found a way to solve (we've done before through a custom screen, but want to avoid).

Furthermore, is it possible to stop the importing of an OTL line into Projects; this way we can on the PA side write a custom program to pull through via Txn Import API for project costing.

Thanks in advance.