Pharmacy changing injection brand

Does anyone have experience with your pharmacy / insured changing the brand of your injection?

I’ve been on Humira for the last 9 years and it’s worked pretty well for me. I found out this week that my pharmacy (Optum Specialty) who is owned by my insurance (united Healthcare) decided to change my Humira to Amjevita. I’ve heard switching can cause issues but have never had the experience. Any insight to avoid the change or your experience with Amjevita would be greatly appreciated!