If you want to link the personnel assignments first of all you have to found a standard report that will merge and de merges the personnel numbers to a particular person id. This method can be the awesome method as a replacement for the running country re assignment action for 10,000 employees each after each other.
Next you have to preserve the following values:
CCURE MAINS which means Concurrent Employment Main Switch X
CCURE PAUIX which means CE Mater Data User Interface Enhancements X
CCURE PIDGN which means Generation Rule PERSONID 2
Remember the employments i.e. Concurrent employment and Global employment are the two different processes.
In host and home the employment status will always remain active .After that you have to activate CCURE MAINS with this you also have to activate the CCURE PAUIX + CCURE PIDGN.
Sometimes you have to activate CCRE GLEMP, by activating this you will be able to withdraw the one employment status and other can be active at that time. If you use this method you ought not to implement CCURE MAINS in fact your solution will work fine for the SAP HR.
After activating the switches you ought to track the above conversion programs and when formerly generating the PERSON – ID. Sometimes you get some kind errors that will run tis reports again and then you have to generate the PER – ID again.
So might be these article will help you linking of the two particular assignments.