How to remove frame in SdrCustomShape during import from docx?

[Regina Henschel]

Hi all,

Problem is:
The fact, that the shape should be a text warp (WordArt, Fontwork) is 
detected in WpsContext in case prstTxWarp exists. At that time a frame 
already exists in the shape.
But with a frame it is impossible to put the custom shape into text path 
mode.

How can I remove the frame when in WpsContext?

Kind regards
Regina