You also posted this question in 2015. Back when you were scraping content from other websites...
https://www.ubbcentral.com/forums/ubbthreads.php/topics/256380/NOTE: There is nothing in the UBB.threads 7.6.0 upgrader which would change your default character set from what you were previously using.
The 7.5.9 upgrader had a bug that switched the default to "utf-8". But that has since been corrected in 7.6.0.
