virtual instruments assignment mess with C8.5 ?

i have a project with some Virtual instruments, manly halion 5 instances loaded from multi presets i made has instrument track with 5 to 8 sounds on them assigned to different midi channels and routed to separate outputs in cubase.

now when i open the project it’s a mess… the tracks in cubase been assigned to the wrong Halion 5 instances and also the midi channels are randomly assigned.i think it was made with cubase 8.5.1.
is that a known issue? maybe its been solved with the last cubase update ? :unamused: