UPDATE >>>>>
The only thing not working correctly seems to be the "Renew" dates on the calendar-based plans.
I've done a workaround.... All my plans calendar-based plans are now non-renewable. Then I copied each plan and created an identical copy except the alias has "renew" at the beginning ... and I changed the duration from calendar year to "1 Year", but kept the "Renewal extends expiration date (without gap or overlap). I also did not allow registrations on my renewal plans.
Voila! .... Problem solved until this "Renew Now" date issue is fixed.
Please let me know when it is fixed nonetheless ....