I have just taken over contract management of a contract that is fixed unit price/IDIQ, under the standard set of government terms and conditions - which includes CAS. Originally, the contract was awarded under adequate price competition, with no submittal of current cost or pricing, so it would seem that it would be CAS exempt pursuant to 48 CFR 9903.201-2(. However, since the subsequent modifications and follow-on options are now sole source, does this make it now CAS applicable? It is for IT services and, arguably, it probably should have originally be awarded as a commercial items contract. The current value is close to $200M. Comments/opinions appreciated!