AGOL Service ExtractChanges Doesn't Return Edits

[mgmccartbmcd]

Why doesn't the ExtractChanges REST API return the edits I just made in either Field Maps or in Map Viewer? I always get: "esriDataChangesResponseTypeNoEdits" even though I've made edits on multiple layers in the service. It worked once, however, when testing additional layers and other services, I keep getting 'No Edits Made' response. 

I have ensured the service settings are correct and that I am passing the correct 'ServerGens' IDs thru the POST content.

Is there a minimum amount of time that needs to pass before Extract Changes will identify changes made to the service? 

[mgmccartbmcd]

It looks like there was a change in the HTTP method being used for Extract Changes. In the past, a POST method was required. Now, a GET method appears to be working.