Is it possible to drop, convert or lock annotation texte (favorite or cell) once they are generated from the geometry feature definition

We are working with OpenRoads Designer 10.07.01.32 and producing plan and plan and profile sheet model with named boundary. I defined feature definition for the alignment and the ditches. When the profile is created ditches are annotated at each PI with sta and elevation according to road horizontal alignment Z value.

the thing is now, we want to manually move these annotations. Is there a way to lock/freeze so that it wont update if there is some modification.

Thanks 

Gilles