Printing incorrect output

We have our custom pick process set up to run on a scheduled basis.  It runs for all of our branch plants in several job queues.  We have the job queues set up as single threaded and the jobs are scheduled to run a minute apart.  We first ran into an issue where the output from branch plant A printed at both branch plant A and branch plant B (the orders for branch plant B were picked successfully but they didn't print).

Our recent issue is that a user submitted a print pick on demand at the same time one of our scheduled pick jobs was running.  The user was at a different branch plant than the branch plant of the scheduled job.  The user was at branch plant A and the schedule job was for branch plant B.  The output for branch plant B printed at both locations.  Again, the orders for both branch plants were picked successfully; only the output was affected.