If you have upgraded from a previous version of CA APM, the old default dashboards are preserved and the new dashboards are available in the Enterprise Manager's examples directory, in the Management Module file named DefaultMM.jar.
If you want to transfer your custom dashboards from 9.7 to 10.7 there are two ways you can do it.
1) You can copy from "9.7_EM_HOME/config/module/" to 10.7_EM_HOME/deploy for hotdeploy or copy directly 10.7_EM_HOME/config/module. for hotdeploy you don't need to restart MOM. For directly copy management module you have to restart MOM.
after restart your MOM keep watching your logs if you find any error related to cross references dashboards you have to fix those and redeploy management module.
Thanks