RESOLVED !!!
I really have no idea of the cause for the mess I had, I decided to try a simple procedure before I begin building the whole system from scratch to find want went wrong.
So here is the procedure, just getting rid of the problematic SOBI2 categories & Joomla menu item and creating new ones while having all the items transferred from the old ones to the new ones and changing the aliases.
Here we go:
1. Created 2 new SOBI2 categories – 'Music-' &' Technology-'
2. Moved all items from 'Music' category to 'Music-' category.
3. Moved all items from 'Technology' category to 'Technology-' category.
4. Deleted 'Music' & 'Technology' categories from SOBI2.
5. Deleted 'Music' & 'Technology' categories from the Categories Joomla Menu.
6. Created a new 'Music-' menu item linked to the SOBI2 'Music-' category. (Alias 'music-')
7. Created a new ' Technology-' menu item linked to the SOBI2 ' Technology-' category. (Alias ' technology-')
8. Emptied all caches, deleted all SobiSEF URL's.
9. Recount categories
10. Activated SobiSEF and purged all again.
11. When finished purging, renamed SOBI2 categories from 'Music-' & 'Technology-' back to 'Music' & 'Technology'
12. Renamed Joomla menu items 'Music-' & 'Technology-' back to 'Music' & 'Technology' without changing the aliases of course.
13. FINISHED !
Now it's working like a charm, I hope this problem won't show up again, I didn’t really understand or fixed what caused it so surprises can arise…
Mark, thank you so much for your time & effort trying to help me.
Best Regards,
Gur
