Item cost profile update / change

Summary:

We have an item category (Indirect Materials) which is having default cost profile as standard cost. There are some items under Indirect Materials category that business would like to change to moving average price cost profile. However, some of these items does not have the item cost profile changed before any transactions. Since these items already have transactions, system does not allow to change the cost profile for these items in Manage Item Cost Profiles setup. Is there a way or workaround to change the cost profile for these items to desired cost profile? Will system allow cost profile change