Dorico has trouble condensing when things are not in up stem voice 1?

For strings divisi, I use up stem voice 2 to trigger the divisi samples, but when condensed, all the slurs are gone. Is there a workaround ?

Yes, it is the case that Dorico has specific conditions under which it will condense slurs, though I confess that as I sit here this evening I can’t remember exactly what they are. I will ask my colleague Andrew to remind me.