[GNC] Stock Merger

[Al]

I'm having trouble getting my head around setting up a stock merger. The 
merger in question is the recent Xilinx AMD merger.

Pre-merger I held 800 shares of XLNX. After the merger I have received 
1.7234 shares of AMD for each XLNX share (1378.72 shares). I received 
$85.65 "Cash in Lieu" for the .72 shares leaving a total of 1378 shares.

Using the Gnucash Stock Split Assistant to the best of my abilities 
results in me now having 1378 shares of XLNX along with the $85.65 
correctly added to the cash account at my brokerage.

So how does XLNX become AMD? Am I supposed to create a new AMD entry and 
transfer the shares somehow? Or maybe just change the name and ticker 
symbol?

Any help greatly appreciated!

Al