I have a site column of type Choice named "Project" with Multiple values selection enabled.
This choice site column is used in two lists - ListA and List B
ListA is a lookup in List B. So when I select lookup value of List A in List B, selected Columns from List A should be auto populated in List B. I was able to lookup most of the fields but for field "Project" which is multi select choice, it selects only first value.
For e.g. In List A, For Item1, I have selected Choice1,Choice2,Choice3 in "Project", when I lookup Item1 in ListB, Only "Choice1" is selected.
I am using Infopath 2013, SharePoint Online.