Creo Parametric 6.0 - Cannot move a surface finish symbol
I have a problem in Creo Parametric 6.0. I'd like to move a surface finish symbol when I need it. I've completely no idea how surface-finishing function works in Creo because sometimes I can move it but sometimes not. Generally I mostly use Normal to Entity position inside surface-finish config window and then I try to move symbol (e.g. on dimmension line). Please, look on the picture below
You should see two views: A-A and B-B. On A-A view I can flexibly change the possiotion of 6.4 roughness symbol (and in effect I can move it on dimmension line) but on B-B view I can only move the 6.4 roughness symbol between the edges. Both views are the sections of the same part. I've no idea how it works and why it is like that. Could you help me, please, with it?