Found in Amiga - Games - ADF:
Code Name - Iceman v1.036 (1990)(Sierra)(Disk 2 of 5)[VSN version]
(and disks 3 to 5)
As there's a "Code Name - Iceman v1.036 (1990)(Sierra)(Disk 1 of 5)[h VSN]", my guess is that these disks only work with the copy hacked by VSN?