Why a same family is adjustable in an new project but not in old one?

[Anonymous]

The version of two Revit file are same also 2020

A same family is adjustable in an new project but not in old one

How can i make the family adjustable in the old project?

New ProjectOld Project

[Karol_Piroska]

because one view is plan the other is 3D ;). You can change it in plan view but not in 3D

[ennujozlagam]

You need to edit the family and add dimension parameter. Thanks

[barthbradley · Accepted solution]

If you edit the Family and replace the Ref. Planes with Ref. Lines, you'll have shape handles in 3D views as well.