How are other organizations working around this issue

We have run up against an issue that on the surface seems relatively easy to correct.  We have discovered by opening an Oracle SR that several other organizations have also encountered this problem. SO now we are all on a list of customers that want a resolution to this issue.  I am trying to find a work around that pleases the (our) Business Community members who are affected by this problem.  Here is the problem - when AR sends refund checks to AP there is no way of telling what caused the refunds creation.  No tie back to the original AR Invoice