Hide Select Item if Already Selected

This is the kind of thing that the relatively new last-saved-instance feature is designed to enable if all data collection happens on a single device. This has not yet been officially announced because there is no XLSForm support yet. I believe the last bits of the specification have just been approved so this should come relatively quickly now. :crossed_fingers: :crossed_fingers: Note that this is not hugely performant and has some limitations.

Unfortunately, as I tried to create a form to demonstrate this, I ran into a couple of bugs filed at https://github.com/opendatakit/javarosa/issues/451 and https://github.com/opendatakit/javarosa/issues/449.

dont-show-options-selected-in-other-instances is a teaser that does NOT work in Collect 1.22 but will hopefully work in 1.23. I'll update this thread once it does.

Thanks for asking this question, @Ayman_Elarian, so that we could identify and fix the bugs!

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