It is the case I have been seeing more and more lately for 11.3 upgrades. I have presently not heard of anything else at this point that does it. However, these scripts control the mapping of incidents and alerts in respond so more than likely this is the cause. If you don't have customization, it's safe to follow the steps I highlighted to you and restart the respond service. Otherwise, without restoring them, they will be lost until reapplied to the newly generated scripts.
If you are unsure and you want to talk about in a less public forum, feel free to open a support case and me or someone else will try to assist you.
