Regarding cutover activities

hello SAP guys,

i am confused regarding activities takes place in CUTOVER.I have read that in cutover you have to upload the master data,u have to upload the stock,within cutover period your client can't create any new orders,and whatever the open orders are there you have to close it.

My question is that in one of the thread in sdn i have come to know that even the open orders you have to upload in SAP.Is it right?Does the uploading of open orders come under cutover activities?or within cutover period u have to close all the open orders so that u can work from start.

Apart from these if u could tell me other activities which takes place in cutover than i would be very greatful.

Thanking u guys in advance.