You know, I'm down with it being "disconnected", because, well, if you're demoing pipe, something will clearly be getting disconnected.

My issue is with flanges disappearing. There seems to be no way to have Fabrication parts that have ANY "Phase Demolished" assigned to it.

It's seeming like I'm going to have to completely ignore phasing altogether because of Fabrication and utilize Shared Parameters and Filters and stuff. Or a workset as you mentioned.