Very interesting in that case. Here is how they are currently and we're not getting the result as expected:
Plan 1 = Exclusive, Monthly Recurring
Plan 2 = Exclusive, Monthly Recurring
Plan 3 = Exclusive, Monthly Recurring
Plan 4 = Exclusive, Yearly Recurring
Plan 5 = Exclusive, Lifetime Membership (not autorecurring)
Plan 6 = Not Exclusive, Lifetime Membership (not autorecurring)
Plan 7 = Not Exclusive, Lifetime Membership (not autorecurring)
Example: I am subscribed to plan 1 and I attempt to purchase/upgrade to plan 6 (expecting to be able to as it's not exclusive) I get an error: "Chosen plans combination is not allowed (you must choose coherent plans selection, e.g. mandatory subscription(s) must be active or mandatory plan(s) must be chosen)."
I'm confident that I have it as you're suggesting, but apparently I'm missing something. Could you please assist to get this resolved. Truly appreciated!
If you need admin access please let me know and I'll pm you.