subD not keeping CREASE when exported to V7 or copied to another file

even whit to nurbs commands crease changes to 0, or when clipboard copy from one file to another (both V8), any options to prevent this on mac ?

Could you please share this 3dm file?

Hi Jessesn,

the file is this one Unique Download Link | WeTransfer

Hi @p.pec

Rhino 7 does not support weighted SubD creases, only hard creases. So any SubD pasted into Rhino 7 (or exported to a Rhino 7 file) will have all its weighted edges smoothed. Hard creases will remain. Copying Breps (the result of running ToNURBS on a SubD) from v8 to v7 should keep shapes exactly the same.

Rhino 8 for Mac had a bug in early service releases where copying a SubD to the clipboard would smooth all weighted creases. The result was that even pasting into Rhino 8 for Mac would loose all weighted creases. This bug was fixed in Rhino 8.10. Are you running the latest Rhino 8 service release?

Thanks Pierre, exporting nurbs keeps the shape