Good Day Folks
I wonder if anyone who uses Virtual Entity in their customisation experiencing any changes after updating/apply patch (the one that is used on where I customise is updated up to September 2020 patch). So, basically on the virtual entity we need to select the data source

Dev Envi (VE bound to Data Source)
However, when the solution is imported to higher envi, let's say for testing environment, the virtual entities do not seem to be bound based on what we have on the lower envi (dev unmanaged solution).

SIT (Testing) Envi, VE does not seem to be bound on its data source as it is on dev unmanaged solution.
At first, we found that this is not a major issue, since eventhough it seems that there is no data source bound to the virtual entity, everything seems fine as after checking through the solution xml (unmanaged), there is datasource bound to the virtual entity.

However, a few of the virtual entities seem to still not bound to the data source eventhough on the unmanaged solution .xml file it seems to be bound and this causes confusion on which is actually bound or not as we cannot literally check through solution customisation UI as usual.
What makes it even more confusing is that, eventhough some of the VEs seem to be able to fetch data as expected, but when checking on db, the VE data source is actually not setup at all (see the second tabular result for SIT environment, the first tabular result is DEV environment)

This issue had not existed for at least in August 2020 patch (cumulative updates). Any clue on what might be missing when configuring the VE? Many thanks in advance and have a nice one.
Regards
Jonas
CRM Build: D365 v9.0.20 (on-premise)