Inside AutoCAD Electrical, you'll find the project manager. When you right-click the project inside AcadE, you'll get options to check out/in partial/all drawing sheets in the project.
You really should do it this way, as there are other things happening in the background. There's some other metadata that's also included in the check-in.
Trond Hasse LieEPLAN Expert and ex-AutoCAD Electrical user.
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