Importing incorrectly triggers "length of field" error for related field

Issue:

Form has a lookup field to another form
When importing, Creator occasionally--and incorrectly--indicates imported value for this field is too long
Workaround is to rename value to something very short, import, then change the name back

Example:

One form called "Restaurant Types" with value "Fast food restaurants"
One form called "Restaurants" with fields "Name" and "Restaurant Type," the latter referencing the "Restaurant Types" form
CSV import attempted for "Restaurants" with record having name "McDonald's" and restaurant type "Fast food restaurants"
Creator throws error stating that "Fast food restaurants" is too long, even though it already exists as a restaurant type
Workaround is to rename "Fast food restaurants" to something like "FFR," run the import using that value, then change the name back to "Fast food restaurants"

From seeing this issue multiple times with multiple fields, I'm pretty sure it's a bug with Creator.