Move records from one LI table to another

[Rainy Pass]

How is it best to move Customer order line item records to Vendor PO line items? A new Vendor PO record needs to be created for each Brand, and the Vendor PO line items table needs to be populated with Style records.

Customer Orders and Vendor Orders must remain independent because data in either may change.

Any suggestions would be appreciated.

Table One: Customer Order Line Items

Vendor Style

A 1

A 2

A 3

B x

B y

B z

Table Two: Vendor PO

New record for A

New record for B

Table Three: Vendor PO Line Items

Related style data (1,2,3) (x,y,z)