Your mission appears to be on a different map as its not visible in my files. Anyhow, both GG Normandy and DG OHP engage a spot on map and not a target group unless its a sea vessel, at which time both will engage, depending on proximity to target with deck guns or TASM. The TLAM is what is used to attack a spot on the map and not an actual assigned ground target. Tested in Caucasus most recent Beta as of this date.
Also, the weapon selection to --GUIDED or -- MISSILE does not have any effect on engaging said ground targets. I believe only sea targets can be assigned/engaged.
Hope it helps