If you have not used any download manager things from TP, it should
be prettyy easy to convert from TP to PMX.
You only need to go to edit your blocks and copy and paste them into
the PortaMX blocks.
Sometimes you have to edit a few block codes, but mostly if you
with PortaMX, so you only have to choose the right blocks.
If you need a download manager, you could
use the one from user VBgamer45
Hope this helps.
P.S. If you already used the TP article system, then you would need
to convert it to single pages in PMXor wait,
until Feline has her new version coming out...