Problem: Hide populated fields when editing a form
Solution: Edit post form is intended to show the content of the post which you currently edit.
If you remove the field values, then the original field values where even you will not make any change will not be get saved.
we do not advise to mimic with the original edit form behaviour as if we make any changes to it sooner or later there is a chance that it can be broken.
You can find the proposed solution in this case with the following reply: => https://toolset.com/forums/topic/hide-populated-fields-when-editing-a-form/#post-1801777
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