The basic question really is how many frames there are missing at each cutpoint and where exactly. Somewhere in the middle of a scene or at its end or beginning?

If there are only a few frames missing and they are located in the middle of a scene and not too complex overall, it might be possible to recreate them using some kind of algorithm based on motion estimation. Now, my knowledge in this area is quite limited, so I have no idea how advanced these tools are and whether this can be done without visible artifacts.

I don’t know if this rate extending concept in Premiere that towne32 suggested is something similar. I have never even touched Premiere.

Inserting upscaled Gout frames might very well be visible when playing the movie back, as will black frames if too many of them occur in a row. Not sure about duplicated frames, might be worth a try.