Combine 2 PSexport

I am analyzing 103 images for period 4 years. Because my computer runs slow at that time, I decided them into 2 groups, which have the same master image x. I analyzed pre-processing in SNAP for each of them. then now I have 2 data of PSexport. How can I combine these PSexport folders to 1data, which has master image x into import to StaMPS?

Thank you!