Adjusting INCEPTION Date

Hi Tess-Community!

Hoping someone might have encountered this and can help me out.  We recently made a bit of a business rule change and now I have a list of members that have incorrect INCEPTION dates.  Essentially, we are sending out special 5-year pins, and instead of just being able to pull based on inception, I had to create a dozen lists to filter everyone out.  Now that I have the list of correct people though, I would like to update their inception date to match our new lapsed membership rules.

Is there a way to update the Inception date for a list of constituents? I can't seem to find a way anywhere..