I've got an array I populate with a change list of partial file paths.  I then recurse the file directory to find if any of those items are contained in the array.  For some reason the -contains operator always returns false even when it should match.  The line of Powershell is below:

dir -recurse $FolderDirectory -include .txt | where { $changeList -contains ([regex]::Replace($_.FullName, $filepathRegex, '$1').Trim()) }

I don't know if anyone has encountered this issue or can point me in the right direction.

Thanks

Just tossing out guesses, but what if you write *.txt and could it be that the trim statement should be ([regex]::Replace($_.FullName, $filepathRegex, '$1')).Trim() in order to trim the whole thing?
Other than that, without a clue as to what is in your variables, that's all I got.