PO export/import ignore the text group location

Export function of the translate interface does not compatible with the import function.
The export/import function works well on the "default" (Built-in) text group, but does not works with the each others text groups, like menu, taxonomy, type etc…

The export create an output like this:

#: term:2:name
msgid "New"
msgstr ""

When importing this file, the _locale_import_read_po() parse it line by line, and collect the comments above the msgid, and store it in array, and trim only the first character (#).

 $current = array(
  '#' => array(0 => ': term:2:name')
); 

_locale_import_shorten_comments() will use this array. ($current['#'])
Join the items of array, and cut off one more character from the beginning of each line. (:)
And trim the whole string to 130 characters. If the comment is longer than 130 character, the location data is lost.
Now the location information is: term:2:name with the leading space.
This string will be stored in {locales_source}.location
The tt() function will never find this.
tt('term:2:name', 'New');