Our organization is relatively new, but we wish to change from fixed annual memberships to rolling. I see it is easy to change that in the membership type, but wonder about how to make the needed changes to the existing membership since/start/end dates.
Currently, all memberships start on 1/1/2020, and end on 12/31/2020, but the memberships have a "member since" date that is the ACTUAL day they became members. (All those dates are within 2020 also, since we are a new organization.)
What I would like, I believe, is to copy the "member since" date into the "Membership Start" date field, overwriting the January 1 date, and set the "end date" == the Start date + 1 year (overwriting 12/31/2020). Is there likely to be any automatic way to do that as a global update? (If I must do it manually, I can; there are under 200 memberships.)
Are there any "gotchas" involved in this? Would I be wiser to create a new Membership type rather than change the existing one? Should I edit the fields BEFORE I change the membership type rather than after?
If it matters, I am using CiviCRM 5.29.0 on Wordpress 5.5.1. Thanks!