Create 2 route groups, say rgA with that gw and rgB with the gw at site B. Create 2 route lists - rlA and rlB. rlA has rgA as first preference and rlB as second. rlB has rgB as first preference and rgA as second. Create 2 partitions - siteALD and siteBLD. Create 2 route patterns - 0! in siteALD partition, going to rlA, and 0! in siteBLD partition going to rlB. Change the CSS of users in site A to have the siteALD partition if they are allowed to call out. Users in site B get a site B CSS that has the siteBLD partition if they are allowed to call out. Site A callers will match on the 0! pattern in the siteALD partition and get sent to the site A route list (rlA). Site B users match on the 0! pattern in the siteBLD partition and get sent to the site B route list (rlB) that chooses that gateway first.
These are the paths to get to each CCX logs through CLI. They may be helpful if you are having issues accessing RTMT or downloading logs through it.
If you want to download them you have to prefix "file get " and you can add one of the options (re...