Still not seeing imported interactos on Save

```
Same bug as before - OK until I hit import then the interactors vanish. When I 
hit Save, they reappear but do not generate a short label. Even when I do 
generate a short label manually, still fail to save.

Interactor list

P12345
CHEBI:4055
ENSG00000169035
lck_human
p49862-2
PRO_0000027942
```

Original issue reported on code.google.com by `orch...@ebi.ac.uk` on 23 Feb 2015 at 11:54
