Can't correct namespace when importing projects

When listing projects to import, if I click "Import" on one whose path with namespace already exists I get the error "This namespace already been taken! Please choose another one" and the namespace becomes an editable field. However, the "Import" button stays disabled.

Captura_de_pantalla_2016-06-22_a_las_10.40.01_a.m.

Expected:

I should be able to select another namespace and attempt the import again

Actual:

I'm unable to attempt the import again.

Note: Also change "This namespace already been taken! Please choose another one" to "This namespace has already been taken! Please choose another one"