U are confused with medishield life and integrated shield plan. There is no upgrade.
Both are seperate things.
Better go moh website read up 1st
Thanks for pointing out the terminology error, basically I mean to have integrated shield plan for full medical coverage. Understand there are two plans, but we always used the term "upgrade" to illustrate the act of buying ISP in addition to the MSP.
The dollar&sense article also written as upgrade MSP to ISP.