How to get the serial numbers to be sequential from job run to job run in Mail360 Manager

A Batch job does not use the g1imb.cfg file.

Instead, when running a batch job, you need to use parameters. You need to adjust the RANGE parameter.
RANGE                      000000001 000000001
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
Put the values starting in position 28 and 38.

The default is 10,000 numbers in a block.  The above will only take 1 number at a time.

But there is a trade off in slower speed if it has to grab smaller groups of numbers more often. And as the User guide says-

Numbering Tips:

• If you choose to work with ranges, you also have the ability to set minimum and maximum range sizes for allocation.

• Smaller values decrease the likelihood of reaching the end of the partition or number pool during processing.

• Larger values prevent fragmenting of the available number pool.

(The g1imb.cfg  is used when you are using an API to make a call to Mail360 Manager and not running a batch job.)