Me:
this stupid software, in some editing, it indicates that cannot keep or leave the connected elements to be connected together. But note that, when it shows me in red color the elements cannot be connected anymore, but actually I deleted them and I changed the profile which be extruded, and those line doesn't exist anymore. how Revit still has them?
ChatGPT:
Yep, you're hitting one of Revit's most confusing and stubborn quirks—this happens because Revit remembers and maintains old constraints, references, or connections even if the geometry is gone. It’s not just seeing what’s on screen—it’s tracking invisible dependencies under the hood.
🔥 Here's what’s going on: 1. Ghost Constraints / References
When you delete or modify a profile (like in a sweep or extrusion), Revit doesn’t always fully clean up constraints (like locks, dimensions, or hosted elements).
Even if a line or face is deleted, Revit may keep a constraint or host link to it in the background.
2. Constraints to Missing Geometry
If something was locked, aligned, dimensioned, or hosted on the old profile, that constraint is still trying to resolve itself, but the geometry it referenced is now gone.
This causes Revit to throw errors like "Can't keep elements joined," "Can't keep elements hosted," or "Element no longer exists."
3. Profile Sketches = Deep Dependencies
Profile sketches (in extrusions, blends, sweeps, etc.) can have invisible references, especially if you used "Pick Lines" when sketching.
Those references don’t disappear just because the line did—they leave behind a ghost link.
