Combining .fcsv Files

Hi,
I have been assigning both fixed and semi landmarks to a skull, and I now saved these as a .fcsv file so that I can carry these forward for a GPA/PCA in SlicerMorph.
Given that I have separate semilandmark curves on each suture for analysis, alongside fixed landmarks, there are nine different .fcsv files for each specimen.
Is there a way to combine these into one single .fcsv file for comparison?
Thank you in advance.

MergeMarkups: Tutorials/MergeMarkups at main · SlicerMorph/Tutorials · GitHub