No, you can play your normal save, nothing breaks if you do.
Also, can you please let me know what you mean by grind? Since there's no grinding in the game
well i did ‘grind’ a lot of money i think before 0.7 release dunno if the money is even needed anymore or even available been a minute since i played. And ok i just wanted to know wether i needed a restart or not. It would not have mattered but it is beter to be able to continue in stead of restarting.