Purchase schedules - original date

Hi,

We are looking for a partner with experience in optimizing processes in Infor LN. At the moment, we need advice primarily in the areas of planning, sales and purchasing. In the material procurement we use purchase schedules and we encountered the problem of managing changes in purchasing terms on purchase schedules.

Steps:
1. We send the purchase release to the supplier.
2. We receive the confirmed term from the supplier and on the basis of this we change the existing planned delivery date on the line of the purchase schedules. In this way, we provide realistic planning dates.
3. On the next version of the purchase release, the supplier no longer sees the original date because we changed it on the basis of the supplier's confirmation.

We would like the supplier to see the new version of the purchase release, despite the change of the original date! We send weekly delivery plan via EDI. To the suppliers that do not have EDI, we send delivery plan via e-mail. We want to find the right solution, can you help us with this?

We use the information system INFOR LN 10.4.