AppSheet automatically detects the column type when you use an app formula. If you're de-referencing a value from another table, typically the system just takes whatever type settings that are on the column you're de-referencing... and applies that to the column with the de-reference formula.
This can be helpful to speed up setting a column type... except when I don't want the column type to be a hard reference, and instead an enum-reference.
The system will always change my de-referenced "reference" from the (enum base-type REF) to a REF; and since I specifically don't want the reverse reference in this case... I have to continually re-set the column back to the Enum - the system keeps turning it back into a hard-REF.
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It would be nice for the system to recognize an Enum (base-type REF) as the same as a REF... and NOT change my column type.