Overwrite feature layer, connection broken in map

[IB3]

Hi, 

I am using the parks and grounds management solutions. I have updates a feature layer containing many sub-layers in arcgis pro and overwrite the original feature layer in AGOL. The changes are made to the right sub-layers, evertyhing works, except that I get this message in all the maps where the feature layer was originally added: 

unable to establish a secure https connection to the layer. the layer,(layer name), cannot be added to the map.

Anyone has an idea how I can solve this one? The map has some capabilties turned on based on this feature layer, so I need to keep the connection between the original feature layer and the map. 

Thanks

[RhettZufelt]

If you added/removed/changed/moved any layers in the map, did you ensure the Allow assignment of unique numeric ID's....... was enabled so that all the existing layers retain their original ID's?

If not, the layer ID's could be different than when originally inserted into the web map and can cause load issues.

R_