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lucy24 - 7:05 am on Nov 7, 2012 (gmt 0)
I have some content that users have entered through different forms.
Missed this bit. You mean different physical forms, as in <form>? Or informally, as in "in different ways"?
Are the information-entering points all on your site? All on the same page? How many different forms? You have to assume that your users aren't literally typing ո or equivalent. So something is happening to some of your forms that isn't happening to the others. The solution may turn out to involve doing less rather than doing more :)
I've tried CF's encode/decode functions, but there is no change.
Are you looking at the raw output or what ends up on your screen? I don't speak Cold Fusion but my experience with JavaScript suggests that there may be more than one encode/decode pair, and you have to find the right one.