How Do You Copy Automation And Reassign It?

Hello,

I have an automation that I am using for the amp release of a synth, and I wish to use it on another track (with a different synth) that I am doubling the part with.  I want to copy the exact automation on that track as well, but everytime I do, I end up with greyed out automation which it seems like I cannot select or do anything with.  I wish to assign it to synth #2's amp release so I have the same curve on both synths.
 

 
 
Thank You,
Adam