Warn about dangers of dynamic repeat

One caveat with dynamic repeats is that if you go back and modify what was selected (either edits in Collect before sending or during edits on Central), the data inside the repeat is discarded when you change the selection. Ordering also changes.

In general, it's good to add an explicit hint in the select to warn users of this behavior and/or have a trigger that clears some required values if the select changes so users can't proceed without the updated data.

Start by locating the Sphinx documentation covering dynamic repeats, selections, and edits in Collect or Central. Document the data-loss and ordering caveats, and clarify whether the expected result is a warning in the select documentation, guidance about clearing dependent values, or both.

Written by the indexing model from the issue text.