Move wasn’t postponed. You were given ample time to test out the ping, they gave out the IPs of the future EU and SEA servers respectively in order for you to decide if you should file for a server transfer or not. If you did not test it yet filed for a transfer, that’s your problem.
You said you’re getting 400ish ping on Klaip steady, so that 160ms is x3 better than what you were getting on Klaip. I myself had a standard 400-600 ping on Klaip and now I have 200 which is x2 better than what I was getting before.
If you think that 200ms is still too much, then you shouldn’t really have hoped for much since you are in AU and the server is for SEA, physical location in SG. If you’re looking for 20-50ms then what you should root for is an Oceana server hosted in AU itself.
For the benefit of the doubt, please run a tracert and I’ll check if there’s an obvious routing issue, else you’ll have to take this up to IMC & your ISP.