Is it possible to merge two or more tps files?

I have downloaded tpsUtil and I have worked out how to split an existing tps file into its constituent files however I need to do the reverse and add 2 tps files to make 1 larger tps file containing more images with landmarks. I have already plotted the landmarks on the photos however I have now found out for analysis I need to merge a few of the files so that I can make different comparisons with the data. Is this possible? If so what software should I use or can I do this with tpsUtil? I really dont want to have to create new tps files from my jpegs and re-plot all of the landmarks!