Use
VMS performs all configuration and pricing activities in the Internet Pricing and Configurator (IPC). The IPC is a separate application that uses its own database. The database is created by a download from the SAP DI system. You have to download the data to the Internet Pricing and Configurator (IPC) after you have created the IPC-relevant data.
You can find further information under
Creating a Knowledge-Base Object for the SCE (note: the Sales Configuration Engine (SCE) is the predecessor of the IPC).
Prerequisites
Procedure
The knowledge-base object groups together all the master data relevant to configuration and pricing for a vehicle model/material. It is used to transfer this data as a complete entity to the IPC database.
Result
The runtime version is downloaded to the IPC server within minutes or seconds and then the data is available to you there.

You must create a new runtime version each time a change is made to the material master records, characteristic groups, characteristics etc. and then download it to the IPC server so that the updated data is available in the IPC.