I’ve notice for a while that when using a custom view layout entity screen and try to export/import that entity screen, not all widgets will show up in the imported system. Layout view mode does not seem to have this issue. However when after importing a Custom view layout and converting it to a Layout view layout, some widgets appear in the “Available Items” list. But when selecting them, they have no settings/properties values. Samba sees them, but appears to not know what they are. They only thing that can be done to those widgets is to delete them.
I’m not sure if this is related, but when creating widgets in Custom view mode, not all widgets get an Id (under properties). Layout generates Id right away. Here is animation showing the behavior:
I have tried inputting a random string into the Id column using MSSMS, but that seems to have no effect on the import of the entity screen.