Firstly, I don't think you need to rollback in this instance.(I maybe wrong)
Secondly, The 'NULL' grid, does this appear on the loading screens? If I am correct the new patrol grid should be displayed 'in game' under mission orders.
It's been awhile since I used a Milk Cow so I can't remember the proceedure too well.
Is it explained in the SH3Cmdr Readme?
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