TMX compatibility issues between Studio and OmegaT

Hi, 

the current version of .tmx exported from Studio features "xml" as datatype, even though it was "rtf" just a few months ago. 

It seems this is causing compatibility issues with OmegaT, which cannot read the TM properly - as it uses "datatype = plain text".

Is there any way this can be edited or a plugin to properly convert the tmx as needed? 

Thanks!