What build system did you use? I thought the JSON compilation database is relatively well supported to generate these days (e.g. used by the language server in VS Code).
The problems we encountered were that they could not rewrite the targets in our build system for the automated refactoring, and any missing include path at all would cause the clang-based tooling they were using to barf.
We just asked ourselves why we would spend so much money on a product when we still had to solve all of the fundamental problems ourselves. We liked the UI, but it wasn't worth the insane license fee.