Item ID Cost Profile Group

The question I have pertains to and Item ID that historically has a Cost Profile that used Perp Avg pricing. With recent changes this item is now to be considered a Capital Spare which then should be placed in the NONCOST profile group. How can I make this change without having to create a new Item ID. There is way to much history associated with this Item ID.

Presently, when I try to make the change in the system, I get as message which states that I cannot change the profile group due to accounting entries. Is there a way to override the accounting history so that going forward the NONCOST cost profile can be used.