Does your progress get reset or is it accessible on PS4 when you upgrade?
The deadline for character transfer from PS3 to PS4 was March 6, 2017. If you haven't transferred yet, then you're out of luck.
If you did transfer already, then the PS3 account progress was cloned to the PS4 account, at which point they became separate entities. Subsequent progress on one platform does not transfer to the other.