Hello and welcome back. Thanks for reaching out. It sounds like you are creating items in VIP which you do not have to do as an IM customer. You can create your items in IM and then publish them to Kroger and then top off them with Kroger's required portal attributes. This way, if you need to sync your items with other trading partners all you have to do is publish it from IM and would not have to have two versions of the same item, one in IM and one in VIP.
If you absolutely have to create them in VIP, here is some info to help with that:
https://community.1worldsync.com/t5/Kroger-Training/Training-Curriculum-Kroger-Vendor-Item-Portal-VI...
