Quite possibly but in the case of the PCS - Wooden sleepers stack asset, the last 4 versions listed by my CM (for both Trainz Plus and TRS22PE) are:-
<kuid2:132952:101201:10> PCS - Sleeper Stack Wood 9m TS
<kuid2:132952:101201:11>
<kuid2:132952:101201:12> PCS - Wooden sleepers stack TS
<kuid2:132952:101201:13> PCS - Wooden sleepers stack
:11 is an <unknown asset> as are all those before :10 so CM, in my versions at least, seems to be able to handle it.