Can I cut off Aux and VE Direct wires and reattach later if needed?
Depends on how good you are at splicing cables. The Aux wire is no issue, just use a Wago or whatever. The VE.direct is not impossible, just annoying
But why cut them, can you not ziptie them to a negative wire thats connected to the Shunt?
VE Direct connection can just be unplugged, (as can the Aux) so why cut them??
ok, was still working with the old design.
I would just tape up the unused wires, cover the connectors with insulating tape, then self amalgamating tape, then another layer of insulating tape. That should protect them until needed.