Hi Vimal, thanks for your response and suggestions.
This is pretty much my approach and since we have the current system intact even after the migration, we can always switch back if we face any issues with the migration.
My concern is reagrding the downtime needed for EHP upgrade. If i was to combine task 3 along with task 1& 2, my downtime would be quite big. Export /Import process is quite time consuming and plus the EHP upgrade is not an option i suppose.
Would there be a better way to combine all 3 tasks ? with minimal downtime ?
For us 16 to 20 hrs is an acceptable downtime
Thanks