I'm following this description for setting a multi-select option set field by URL:
When trying to build a URL which opens a form in UUI the field will not be set and appears empty:
https://myenvironment.crm4.dynamics.com/main.aspx?appid=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx&forceUCI=1&pagetype=entityrecord&etn=account&extraqs=new_myattribute=[707060000,707060001]
When doing the same in classic UI (without providing appid) it works:
https://myenvironment.crm4.dynamics.com/main.aspx?forceClassic=1&pagetype=entityrecord&etn=account&extraqs=new_myattribute=[707060000,707060001]
Is this a known bug or do I miss something here?