Thankfully you can still keep that memory card aside and use it for other dash cams.
Also with how memory card prices are trendingš. I'd say buy another Viofo memory card before prices go up more. You'll find it useful for troubleshooting, and you'll eventually want to use a new one anyway after a year or so of use with the previous one.
Personally, I take out the memory card from my A329S every so often to take a look at the locked videos, and I have the spare one in just in case something happens to my car during parking mode.