Lost Ability to Edit Calendar Events Created for My Ward as of Feburary 15 2017

My stake was split into two Stakes in January. Both Stakes have new names. The previous Stake Name is no longer in use.
I can edit Calendar Events scheduled by me for my Ward prior to February 15. I can still create Calendar Events . However, I am no longer able to edit any event created after February 15.
I am not sure how to get this fixed. Thank you!