I think it’s fine because the recording is not saved unless you explicitly tell it to save. If it’s anything like Nvidia’s shadow play, you set an amount of time, say 5 minutes that it keeps in memory, and when you save the clip, it simply saves that file containing the last 5 minutes.
I think vault export requires the password, so manually exporting all the entries one by one may be necessary. Wont be fun to do but if it means not starting over it can be worth it. And yeah storing the master password in a vault is definitely something everyone should do