In the advanced free play settings, you have the option to use custom rules, and then you have the option to turn on rewind or not.
You can then save those settings and load them. I have saved a ruleset with custom rules, full damage, and rewind on. Whenever I load it, rewind is turned off, and I have to manually turn it back on.
Edit: with Update 10, it seems that it’s the whole “Rules & Regulations” section that isn’t saved/loaded.