You may have to ask for a supervisor with oil & gas experience. California used to have a lot of those. See if you can find the press release that talks about the name change.
Another person that might be able to talk you through it is the President of the California Chapter of NARO (National Association of Royalty owners). He is well aware of how CA works. www.naro-us.org is the main page. He should be listed on the CA page. If not, I will look him up. We serve on the National Board together. My cousin had this same issue and it took some extra paperwork to actually get the bank to understand, but eventually worked out. Just had to have a supervisor at the bank that actually understood the lingo to get the underwriter to “get it”. I can look up your wells and perhaps get a production decline if you want to share the section, township and range. Usually they want three years of guaranteed income, so tax returns. copies of check stubs from the last three years are helpful.