Copying and Pasting Key Frames in Maya

Hello,

I’m attempting to build a work around for a problem in UE4 and Maya and I could use some input. I’m essentially exporting a camera with animation from UE4’s matinee and bringing it into Maya (Standard Scene Y up, Y Up on FBX Export, can’t change that sadly) but when I bring that same camera back into UE4 from Maya the translation and rotation values are all switched around and in some cases completely flipped. My solution is to copy the key frames from one attribute in Maya and paste it to another attribute ( X goes to Y, Y goes to Z, Z goes to X, etc.) But I also need to flip a few animations as well, basically I’ll have a negative curve that animates from -30 to -60 and it now needs to pasted in a new value as 30 to 60. Having never done this before, any feedback you could give would be helpful! Thanks!