I have been unable to take maps offline in collector since the update on March 19 (PDT). Both my maps have been taken offline successfully previous to the update. I had made no changes to these maps. I have services hosted online, published in ArcGIS 10.4. I am using Collector Classic. I have also tried in the new Collector app but that also failed. The error message I am getting is:
"Unable to create replica. Please check your paramaters. Create replica internal error. "
I have tried republishing the services and creating a new map with the new services but still got the same error when I attempt to take maps offline.