Fulltext issue rt 4.4.3

Dear all

I’m studying the upgrade of my RT production server from v 4.4.0 to 4.4.3. I do this on a testing server before to have a minumum downtime.
I could do all the stuff right now.
The issue i found is that the simple search don’t get me back nothing. On my testing server, when i do a search in fulltext, I get back an empty page. Althought the same search on my production server get me back some tickets.
I ran the /opt/rt4/sbin/rt-fulltext-indexer command more than three time. The same issue occurs…
Where should i search for this problem?

Thank’s for help.

Dear all.

I’ve detect that the simple search with domain, like "“foo.com” don’t get me back any ticket too. That’s seem taht this search option is breaking during the upgrade…
I’ look at others features, and all seems to run correctly.
So if someone could please help me to search where is the problem. That’s the unique issue I have to resolve, and can upgrade my production server…

Thank’s a lot any help!