Invalid Custom Schedules

I'm going into year 3 of a connected dynasty with 32 users. We do rotating conferences every year with custom non conference schedule. This is the 2nd season in a row where I cannot edit the schedules because of a message that reads "The schedule is invalid and will be reverted to the last saved version." if I make even one edit to the original schedule that it gives me.

Are you ever going to fix this, EA? This is has been an issue for MONTHS now and it is still not working. Absolutely pitiful.