FTK - .mbd file encryption question

Hello all. I'm new to the forum and new to digital forensics in general. I'm sorta flying solo in my office right now so I figured it would tap into the community for assistance.

The subject hard drive I am analyzing has check generating software installed on it and the aforementioned program appears to create Microsoft Access database files (.mbd) for each "project/check" created by the used. All of the .mbd files associated with this program are encrypted (red in FTK) and not viewable. I assume this was done by the program itself, as no other user files on the drive are encrypted. I subsequently exported several of the .mbd files out of FTK and onto my desktop and was able to crack the password using a Nirsoft program…and the password seems to work on all of them (at least the sample I tried). The .mbd files are your typical Access database files that include several tables of data etc. As such, I then went back into FTK, added the password (Tools/Decrypt etc), and reprocessed; however none of the .mbd files were decrypted as a result. Am I doing something wrong here?

Ultimately I'd like to include these .mbd files in the final report and give the reader access to non-password protected files via FTK. Am I out of bounds with this goal? As a last resort, I can export all of the .mbd files out of FTK and onto a disk to provide it to the end-user with the password. I apologize if this is a silly question…still coming up the learning curve. Thanks again!