bug after upgrade from 4.9 to 5.4.3

Hi
I upgraded from 4.9 to 5.4.3 and all seems fine however i found one bug

articles that had links with non SEF url were converted to an sef freindly url automatically while in the new version the same urls gives a 404 error

www.mydomain.com/index?option=com_conten...=view&id=77&Itemid=8
gives a 404 error

Thanks,
Alon

???

sorry if i wasnt clear

when version 4.9 was installed i had in my articles links to other articles, their href was non sef i.e index?option=com_content&task=view&id=77&Itemid=8

sef advance automatically converted it to sef frriendly url

however with the new version i get a 404 error

404 error on what?

I seriously doubt that depends on version change. It must be some setting you changed.

settins is exactly the same , you already know my site so i'll email you the url for you to see

Hi Emir
Th eproblem is in the old version index?option=com_content&task=view&id=22&Itemid=8 was converted to an sef url

now it needs to be index.php?option=com_content&task=view&id=22&Itemid=8

All my non sef urls need to be converted as a result.

I also found that before the upgrade search engines were crawling the old urls just fine , now as a result there is a problem and page is not loading

search.live.com/results.aspx?srch=105&FO...he+world&adlt=strict

see the 2nd poistion

now it is actually hurting my seo efforts
Alon