Cannot work with SUP files timecode data

Not sure it's a bug, yet one would definitely expect this to be working :)

The problem is that SUP files cannot be worked with, if they are not OCRed. 
They cannot be split, user can't change the timecode for the subtitles, etc.

We would like to import the SUP file as is (just import, NOT OCR), change the 
timecodes for some lines and export it back as SUP.

What steps will reproduce the problem?
1. Select File > Import/OCR Bluray sup file...
2. Hit OK button. #, Start time, End time, Duration columns are correctly 
filled with data.
3. Select File > Export > Bluray sup file...
4. Hit Export all lines...
5. Choose different SUP file name and hit Save.
6. File is correctly saved, but all graphical subtitle data are lost.

What is the expected output? What do you see instead?
I would expect the result will be the same as imported file. Instead all 
graphical subtitle data are lost.

What version of the product are you using? On what operating system?
Confirmed on SE 3.3.6 Win.

Original issue reported on code.google.com by webmas...@cvut.cz on 16 Jul 2013 at 3:14

lmaali9 / subtitleedit

Cannot work with SUP files timecode data #158