charset problem while migrating from mssql

[hctopcu]

I'm trying to migrate to vBulletin from an old version of maxportalweb.
Forum is Turkish and db is mssql uses latin1.
Impex system does not support mssql. So I had to first convert database to mysql then try to import them.
Because migration tool failed, I transfered db as utf-8 on another software. (Not have another encoding option)

I can see the data correctly while using selects on query analyser.
But when I try insert-select or use working modules of impex system I get "?"s in my language specific characters.
I tried migration tool to convert to latin1, it failed.
I tried CONVERT(... using latin1) in query, nothing changed.