RegEx Redaction Patterns

I have customized my searchredactpatterns.xml for Adobe DC Pro and placed the new file in what I thought were the appropriate locations. However when I indicate that I want to Find Text | Patterns.... my new file (or at least my new patterns) are not displayed in the drop-down.

Here is where I've placed the file (using Windows 7):

C:\Users\<UserAccount>\AppData\Roaming\Adobe\Acrobat\DC\Preferences\Redaction\ENU

C:\Program Files (x86)\Adobe\Acrobat DC\Acrobat\DocSettings\Redaction\ENU

Can someone perhaps guide me as to where else I might need to replace the file? Thanks so much!

~juliec