Sorry all, I haven’t been back on and realised there were questions about the script, but yes sounds like you all figured it out!
Just to clarify, what the script does is it takes the data from 3dsMax and simply formats it into the same format as if you were to copy a spline in the scene. You can always try this yourself by copying a spline in a scene and pasting it into notepad.
It is also possible to customise the above script to paste a spline into any blueprint type/format you need the spline in by simply pasting a copy of the one you want to replicate into notepad, then opening the above script in notepad or code editor of your choice and simply formatting it to match the blueprint. You don’t really need to know maxscript to be able to do this, just be careful replicating the formatting.