Yes, you can move any VM's either from vMotion or cold migration to ESX 4.1 as far as it meets the vMotion or cold migration requirements.
Reason. ESX 3.5.x has VM hardware ver 4 and ESX 4.0 onward VM hardware version is 7.
Every ESX version is backward compatible to run the VM's from previous Version of ESX.
Kindly consider allotting points if this information help you.