Thank you Laszlo! I am not exactly sure what you are saying. The source of the HLM is contained within the file where the modules reside (off to the side). I have deleted the placed HLMs, then re-saved the module as a MOD, then placed new instances of the HLM. When the HLMs were deleted, no locked change appeared in the Change Manager, however placing a new module caused a new locked change in the Change Manager which cannot be deleted. Scott
AC25 v. 5005 w/ MEP, Cadimage, Twinmotion 2021 using AC from AC6.0, 2.7 GHz 12-Core Intel Xeon E5 (OS X 12.2.1 Monterey), AMD FirePro D700 6GB, SSD, Artlantis 2019, Adobe CC. Used AC on both platforms.