I just changed a field name of one of my content types from "location_name" to "name".
I also changed every reference to "location_name" in the others files, and especially in data files, to avoid issues.
Nevertheless when i try to deploy my site locally this error show up :
Resource invalid: entries_custom_fields is invalid, #0: Label is already taken
The error seems to alert about the label attribute of the field, as if it was trying to create a new field instead of overwriting the existing one.
If it's the case it makes sense that there is a conflict with the already existing field with the same attributes. But it seems really strange to me not to be able to edit fields in some files without breaking everything...