Since i face the same situation like ba5tard before, i gonna share this.
For what i know, after staying in Singapore for 60 days, you need to go back Malaysia and stay there for at least 30 days, that is what the white card stated.
Then again, u can re-enter Singapore after 14 days time. BUT... here is the problem, instead of getting 30 days stay, they will cut it into half, only 14 to 15 days allowed. AND... here is another prob, within that 15 days, you can't extend your stay in Singapore anymore.
I try enter using IPA before and i can tell you this, they dun care shit about your IPA.
So here is my advice, you can stay in Malaysia first, until you are confirm to get your EP in Singapore, then you enter and settle it within 15 days.
OMG! IF this is true I'm screwed... I will be starting to work tomorrow. And I'll be doing my finger printing this Friday at EPSC then Saturday I've bought flight back Msia, Then Sunday back here again... I hope they do not stop me from entering SG...