I recently update ArcGIS Pro (to 2.9) and proceeded to conduct usual analysis of updating client's dashboards which I have been doing for months by overwriting feature layers. For the very first time, i received the error message: "Allow assignment of unique numeric IDs for sharing web layers". I checked the settings and proceeded. But upon inspecting my webmap, the layer had disappeared on the webmap and dashboard functionality completely corrupted (says "not fully configured").
How on earth do I fix such a massive problem? or at least restore my webmaps and dashboards to function as the client wants to use the items? It took me a long time to configure all items on the dashboards with graphs, lists, filters and linked actions and don't want to have to always recreate this.
Another issue I noticed is that that layer no longer even appears in my initially created folder on portal. its as if it was deleted.
I did just that and the settings mess up up tens of dashboards relying on this layer! how does one fix this?