All Sublists added during Solution Studio's Dossier Wizard gets automatically an "Add Sublistname" Action Link configured on Dossier to directly create a related Sublist item.
If you add a Sublist and its "Add" Action Link afterwards the relation to Dossier is not set automatically in Sublist's NewForm.
Left: Sublist added during Dossier Wizard. Right: Sublist added afterwards
For this case you have to add this configuration manually that initially the Wizard do:
- Add this Additional Query String parameter to your Open List Form Action: