Hey @entegroIreland
If I understand you correctly, you will find the ability to display and edit certain fields here in the new Map Viewer:
First click on the layer, then on the far right menu, click the popup button here:
After that, you can click on Fields list and it will bring up fields for you to delete/edit, along with this you can disable popups entirely:
If I've missed your point, let me know and I can get this changed up!
Hope this helps!
Cody