Simple question

I have a Garmin echoMap 74sv at my console. I have a LakeVu HD card I use for lake maps.

If I put a Striker 7cv at the bow, will the 74sv share mapping info with the Striker? I know the Striker is GPS only and doesn't have legit maps (I have a Striker 4 on my pond hopper). I'm trying to find out if the echoMap will show it's mapping on the Striker if they are connected?

Will they share sonar data?

If not then I'll be getting a 73dv for the bow..

Thanks