Hi samar magdy 

A TMX file doesn't hold segmentation rules.

If you want to use paragraph segmentation for all future files then creating a new TM with this option will work for all future files. But if you import your TMX into this new paragraph based TM the segments will still only be sentence based as these are already defined in the TMX. I'm not aware of any tools that can go from sentence to paragraph... only a few that go the other way around.  Part of the problem I guess is that a TM is not a true reflection of the original documents so making sure the paragraphs were really correct would be tricky if not impossible and technically the TMX puts all segments, whether sentence based or paragraph based into a single TU.  So there is nothing in the TMX to tell any tool whether the TUs were part of a larger entity or not.

What may be useful if is that if you do this the fragment matching feature can pick out the TUs. So whilst you won't get proper pretranslation leverage at least you would still be able to leverage the work interactively:

Once you have converted your bilingual file that's it.  You can't change the segmentation at this point, you need the source file for that.  Perhaps a potential solution would be to align the source and target files with a TM set up for paragraph based segmentation instead of trying to change the bilingual files... although I wouldn't hold my breath!

If there is a solution for this out there I'd also be interested to learn.

Thank you for your replay.

I would like to ask you a question. While trying to create SDL Project with a new Paragraph based TM, The new created file is not segmented with Paragraph as per the below is a screenshots.

I have expected that each highlighted paragraph will presented  in only one segment in studio but this didn't happen.and the text is also segmented by full stop.

Best Regards,

Samar