Since upgrading to Revit 2027, copying and pasting a piping network that contains a closed loop causes the pasted elements to lose their original System Classification, System Abbreviation, and System Type values. These parameters are replaced with other pipes from the same network (i.e., all pipes in the system become the same System Type and Classification)
In Revit 2026, the behaviour is something like this:
In Revit 2027, the behaviour is something like this
Request
Please either:
Scope the 2027 fix correctly so that the copied system carries the same value in the pasted system.
