How to unify repeated items?

[GustavoFleury]

I imported from Revit a cladding wall with three families, each one placed several times.
I need to create flanges and a flat pattern in them, How can I unify the identical ones to do it only once for each type?

[johnsonshiue]

Hi! Please share the ipt file here. There should be a workflow to do that. But without seeing the actual model, it is impossible to identify the good workflow.

Many thanks!

[SharkDesign]

I can't remember if importing from Revit supports instancing or not, you might have to do the work on one and then reuse the same Inventor part manually.