When i want to port out my 2 number from digi to yes, i convert from digi postpaid to prepaid first, then just buy rm5 data plan for 3 days.

Yes telco, they will always activated the new mnp sim 1st with random number. Once mnp success then only will become ur previous number.

So yes activated doesnt mean its done MNP.
Can check via YES app. Usually can login using temp number & password. Once MNP success, it will logout and need to login using the MNP number.