I faced allot of questions about the fact that Post Through GL does not effect posting individual transaction, in fact, I got requests to customize this feature to post through GL even if the transaction was posted individually, and the only solution I could make is to create a service on the server that posts the transaction from GL upon posting it from the module, I tried allot to workaround it using VBA and directly post the transaction in GL upon closing the form, but all my tests failed.
Today Mariano Gomez collected some explanations about the Post Through GL for individual transactions Posting, check his blog post below:
Hope this helps.
Mohammad R. Daoud
MVP, MCP, MCT, MCBMSP, MCTS, MCBMSS
+962 - 79 - 999 65 85