Import - Preferred Communication Method field doesn't accept multiple value list in the same format as we export

You should be able to import Preferred Communication value with a list of valid option values using the same format as the export creates - a comma separated list with space. Currently we throw an error:

Invalid value for field(s) : Preferred Communication Method

... when I use a value like this:

"Email, Postal Mail"

... which is how we export multiple values. We should strip out the spaces prior to evaluating the options in the list.

NOTE: If we eliminate the space in the list, then it seems to work - i.e.
"Email,Postal Mail"