Like I said above, I’m not sure how your getting it to work at all, local, remote, single site or multisite. The documentation for the acf_form() fields argument is:
/* (array) An array of field IDs/keys to override the fields displayed in this form */
field_IDs would be the database ID of the field. Field keys must start with field_. That means that to two places where you’re specifying the field to show should not work at all. The only thing that I can think of that would let it is possibly that the fields on your local site already contain data and the fields on the multisite do not, and if this is the reason then it’s is doing something that you can’t depend on it doing.
Hope that makes sense.
