Here's a simple program that allows you to edit the ID of an EVP and change the name of it as well. This should make editing entrance slots a tad easier. If you run into bugs, please send me a DM on Discord - jakeypearce#6392 - with the file you were using and the data you entered. =]
Yes, this DOES support EVPs from as far back as WWE '12 until 2K19.