Selecting Orders in Grid => Massaction ShipConfirmSend returns orders in different order

[seansan]

Selecting Orders in Grid => Massaction ShipConfirmSend returns orders in different order

• [ X] I've verified and I assure that I'm running the latest version of the TIG PostNL Magento extension.
• [ X] Extension support request (request for adding support for a new extension)

we mass print shipping labels from the order grid

If we select orders
4
2
1
3

then the shipping statements in PDF are returned in a different order

It is important to keep them in the same order for faster processing

we package order 4, then 2, then 1 then 3

and add the slips in the same order

how can the Postnl extension respect the order in which the orders are selected??