Dynasty Depth Chart reseting.

I'm in year 3 of my dynasty and never had this issue once. But all of a sudden only for my WR's if I put someone that isn't in the top 6, into the top 6. Whoever is the 6th receiver on the Depth Chart. Will then be removed from the 6th slot into the pool of players. I'll add them back to the 6th slot, back out of the depth chart. Load back in and it resets again. I have enough WR's to fill all 6 slots. I can auto reorder and it will fill in all the slots but again if I pull someone from the pool of players into the top 6. Back out and re enter, the 6th receiver slot is empty.