Migrate multiple lookup value columns

[aliu]

Let's assume the list Pages has a column called MultiLookupValue that is a multi-value enabled lookup column that looks up into the a list called LookupList on the Title field. And lookup list has the following three list items:

ID Title
1 a
2 b
3 c

Now, assume you want to migrate a web page to the Pages list using WMM with a value set in the MultiLookupValue field. To set the MultiLookupValue field to be the lookup multi-value for first two items in LookupList (shows up as a;b in the web browser) you would use the following value in a the WMM field that gets mapped to MultiLookupValue:

1;#a;#2;#b

It will do the trick