Hi @Anonymous,
Ketiv Technologies (as well as others) used to have some simple lisp routines that would help clean up "wall" intersections. Wall-L.lsp, Wall-X.lsp, Wall-T.lsp might be things to search for on the Internet. I don't see anything that will do this in the Autodesk App Store but I bet there are some lisp routines hiding out on the Internet.
Please select the Accept as Solution button if my post solves your issue or answers your question.
John Vellek
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