Cam Shaft Expansion Plug Replacement in Truck

[Ecartman84]

Hi guys, I have my transmission pulled out of my truck right now to replace my rear main seal. I have the rear seal, galley plugs and both coolant expansion plugs replaced already. The only thing I did not replace was the expansion plug over the cam shaft. Has anyone replaced this with the camshaft installed in the engine? Does it matter? I want to get everything done so I do not have to drop the transmission again as it is a huge pain!

Thanks!