Batch create plugin doesn't seem to recognize and assign users to already created blogs.

Using the batch create plugin I have no issues creating new blogs/users etc. However when attempting to assign new or existing users to an existing blog the upload seems to lose the blog name. For instance, the existing blog url is I upload a csv that consists of- well,null,hcps-babcockej,null,,subscriber - as per the example item on line 4.

The result is the following error log -

2013-09-17 02:32:12 [debug] - --- Starting queue item processing ---
Blog name: [well]
User name: [hcps-babcockej]
2013-09-17 02:32:12 [debug] - User hcps-babcockej already exists (ID: 34376)
2013-09-17 02:32:12 [debug] - Blog ( does NOT exist yet
2013-09-17 02:32:12 [debug] - There was no explicitly requested blogs; adding user to main blog
2013-09-17 02:32:12 [debug] - --- Queue item processing finished ---

It appears to look for rather than the - although both blogs exist.

I've tried this with a few different variations, different blogs etc. and run into the same error. New vs existing users doesn't seem to matter. Various user rights, etc.