Importing to multi-select fields can be done by mapping a Pipeliner field which is a multi-select field to one or many values representing the available multi-select items.
To import into the multi-select field shown below, the import data can look like this:
FirstName, Surname, ContactScale
The double quotes is necessary due to the comma’s inside the ContactScale import field.
Importing into a multi-select field overwrites existing selected items. So if the import data is updated to use “100,50”, then the record is updated with new selected items.