Re-import updated bilingual review file

Hi,
assume you export your segments for external review in MS Word and then import the bilingual file with tracked changes/comments. Suppose the external reviewer made additional changes to the bilingual file in MS Word and you want to re-import the updated bilingual file. As stated in SDL Trados Help "Translations in the *.sdlxliff project file are not updated with the new reviewed content if the segment has changed after you exported it for review, is locked or has a status of Signed off." The only workaround I find is rejecting the changes and comments in the SDLXLIFF file (or use the backup file), export the "clean" SDLXLIFF file for (a second) external review and (manually?) redo the changes/comments. Any hint for getting the updated review back into SDL Trados in a more efficient way?

Thanks
Detlef