CA3000 direct association

hello, maybe someone can provide me some guidance. For more than a year now, i created group 1 and directly associated my CA3000 to 3 GE45609. so when i turn on CA3000, the other 3 lights in backyard also turn on. i have an extra CA3000 that i just installed yesterday to control the light in the side of the house. i included this newly installed CA3000 in group 1 - now i have 4 light switches associated with the first CA3000. however, when i turn the parent CA3000, the last CA3000 does not turn on; only the original 3 lights turn on. i deleted it, reload, etc but to no avail. can someone clue me in please.