Not Loading Presets

Since upgrading from N3 to 4 and recently 5, upon loading N3 songs, my previous presets in Vienna Instruments, Trillian, BFD are all gone.
I’m still working with 4 even though I have 5 because there are bugs in 5.
I can’t figure out how to load them in.
Even when I powered up my old mac, saved as Instruments, banks and presets, N4 or 5 doesn’t recognise the files.
How frustrating. :smiling_imp:
Kontakt 4 is the same.
You can’t load previous presets that were made in K3 into K4 because they won’t show up in the preset menu.
Any ideas would be welcomed before I ditch Nuendo for pro tools. :open_mouth: