The importer in Classic/Threads should allow for a smooth migration.
And yes, as everyone well knows, I have a total undying hatred for threads ... I'd immagine with some boredom and html knowledge that anyone could hack up the threads templates (not to mention CSS code) to look like classic.
Bottom line, if you have enough threads/members that you NEED a PHP/MySQL solution; by all means, go to threads... At least you'll experiance the fun of modding away a fresh install again (which I haven't seen since UBB.Classic 6.5 due to Beyond Compare)...
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