Hi,
I'm writing this post more as a note, rather than doubt.
I was reading about Table import and found a way to do a tool I wanted some time ago.
It's an translation between Octane Standalone CSV and Houdini matrices - 3x4 -> transposed 4x4.
For me it is useful to recover old scatters from lost files / different programs and be able to edit them.
I'll leave it here in case it is useful for someone else.
Cheers!
M