Restrict Create accounting program for particular transaction source

Summary:

We are in process of migrating AR Trx data with same ledger which has gone live already. So we want to restrict create accounting program to not pick newly migrated invoices which are specific to new phase of project.

Content (required):

We are migrating ar trx data to an existing ledger and we want to restrict the create accounting program to not pick up newly migrated invoices.

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):