I am using RTC 4.0 and found that the CSV Work Item importer does not work for enumeration list.

steps I used:
1. create a new project with fpm template, e.g. fpm1
2. create an enumeration, e.g. myenum1, with assign values
3. create new attribute for defect with type enumeration list, e.g. myMulti1,  pointing to enumeration myenum1
4. in editor presentation, add presentation for myMulti1, with kind "Checkbox enumeration list"
5. create a defect workitem, e.g. defect1, with select values for myMulti1
6. make a query with result includes defect1, e.g. myQuery1.  in "column display", make sure select attribute myMulti1
7. in Eclipse client, use File > Export > Team > Workitems, select myQuery1, and export as a csv file, e.g. myQuery1.csv

reproduce:
8. in Eclipse client, use File > Import > Team > Work items from csv, select the csv file
    select project area: fpm1, and choose "Create a new workitem"
9. check the CSV file, the values for myMulti1 is there

Result:
a new defect workitem been created, but no value set for attribute myMulti1
Expecting:
the myMulti1 is set as value showed in csv file

is this a defect?