
Because the Picked transaction is only for tracking and monitoring purposes and has no financial impact, there are no physical dates.
In contrast, for Dispatches/Receiving, the system updates the physical dates based on the inventory transaction. These transactions can have a financial impact depending on the configuration. Once these documents are invoiced and the inventory status is Sold/Purchased, the system updates the financial date, and the corresponding financial impact is posted.
However, the above is a general rule, as the system maintains the data differently for work and transfer orders etc.
Cheers,