No, you are wrong

For Maxis One Plan East Malaysia (Sabah & Sarawak)
1) You will need to be resident at East Malaysia with billing address over there
2) You will need to walk-in to Maxis center only at Sabah or Sarawak for the registration
3) The usage must be at Sabah or Sarawak only. If there trigger the usage all the while is at West Malaysia, your plan will auto change to Maxis One Plan West Malaysia
4) The Unlimited data 1am to 7am only can be utilize at Sabah or Sarawak

I have clarify everything with Maxis staff since the first day they launch this plan

Nope, it is stated in the T&C, they will check the usage on quarter basis (3 months) and 75% of the usage will need to be at Sabah/Sarawak only. So if you are referring to travel to West Malaysia for 1-2 weeks. No problem for it.