Export the source 4.6C on Windows and MaxDB
Build the target 4.6C on Windows and Sybase
Import the source export into Target system using R3load process via SWPM.
Note : During this migration the unicode conversion is also done.
2) Perform Upgrade to ECC 6.0 EHP6 on target system
Sorry, I disagree with these steps.
You cannot install an SAP system based on 4.6C on Sybase.
Check PAM for supported OS and DB for EHP6.
For the DB migration, you do not need to create the target system in advance for the import.
You just need to take the export of the source system and then start the target system creation and provide the import (dump) and create the target system on the fly.
Regards
RB