Import bookmarks from HTML file fails after 10 %

Hi *,

Comodo Dragon 26.2.2.0
Firefox 19.* - 21.0
Opera 12.10 - 12.15
Windows 7 professional 64 bit

#1 - I export bookmarks from Firefox to a html file: round about 22000+ bookmarks into file size 3.7 MB.
#2 - I export bookmarks from Opera to a html file: round about 22000+ bookmarks into file size 1.9 MB.
#3 - I try to import the Firefox bookmarks file into Comodo Dragon
#3/a - import stops after estimated 10 %
#3/b - only one of my 1st level bookmarks folders (under Firefox' bookmarks toolbar folder) was imported.
#3/c - three other folders from 3rd level folders were imported, strangely without their upper folder.
#4 - I try to import the Opera bookmarks file into Comodo Dragon: with success!

Comodo Dragon seemingly shows a bug while importing large html bookmark files with a size of 3.7 MB, or the problem could be found within the structure of the Firefox bookmarks file. The Opera bookmarks html file, with the identical 22000+ bookmarks but smaller with only 1.9 MB correctly works.

Where is the difference / problem / bug in Comodo Dragon?

Thank you very much for your help!

Regards,
KHelmsch_de