Issue:
I was able to load a set of trusses into another drawing with no errors and I have deleted all the previous trusses and tried to import the HMM file again. I get an assembly memberlds error message and I also get this error message “Changes to Engineered Truss Assembly are not Allowed” while moving the trusses in Revit. I checked with the truss supplier and we are both exporting and importing using the same steps
Solution:
By Design, unless you are an engineer, you are not supposed to move the Trusses. ModelMap Pro is for those who have customized trusses and need to move them. Contact the product provider to discuss how to get the ModelMap Pro module