When creating a map in AGOL using AGS map services by default the layers do NOT have the pop-ups enabled. It's all well and good if it's a feature service as the layers have pop-ups automatically enabled. We host the ArcGIS Server map serves and run them in AGOL maps. The annoying thing is that there is NO GLOBAL setting to turn on pop-ups for all layers at either the AGS map service level (the map service is added as an 'Item' in My Content) or at the AGOL map level (potentially made up of 4/5 map services). When you have around 100 layers to enable pop-ups for it gets very tiring.
So please ESRI can you add an AGOL setting to globally apply pop-ups to all layers in A) the AGS map services (added as Items in My Content) and B) the AGOL map level (made up of multiple AGS map services).