It looks like there is a bug somewhere in the import routines (or somewhere else where a Contact object is saved); somehow a contact record got overwritten with NULLs in the database. This shouldn't cause any long-term data loss, though, since on every import if a contact doesn't exist it's recreated.
(I'm thinking of switching the project to GreenDAO instead of my homebrewed ORM; if I do, the affected code will be replaced anyway).
It looks like there is a bug somewhere in the import routines (or somewhere else where a Contact object is saved); somehow a contact record got overwritten with NULLs in the database. This shouldn't cause any long-term data loss, though, since on every import if a contact doesn't exist it's recreated.
(I'm thinking of switching the project to GreenDAO instead of my homebrewed ORM; if I do, the affected code will be replaced anyway).