The Security Center comes in handy to maintain and enhance your password database quality.
The 'Old passwords view contains (in my case) mostly legacy login accounts. For obvious reasons I don't want to update the password, but just delete the record. So, please add a 'Delete Record' button.
And make it possible to open a record from within the Security Center to use Auto-Copy On URL Launch, login the website and then update record or password in mSecure.
Real quick, are you using the Windows version of mSecure? Regardless of the platform, you should be able to Ignore items in the Security Center. Are you not seeing that option?
In the future, the Security Center should have more options for fixing up the records when you find problems.