hmm i'll check again.
ok so maybe i misinterpreted. here's what it says:
57. dring 1986 or 1987, linda vista had grown large enogh that it could divide into two distinct congregations. at that time, la jolla spanish congregation, which went on to become playa pacifica came into existence.
58. linda vista was the "parent congregation" of la jolla. this means that the complete membership originall comprising la jolla were former members of linda vista
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both facts were undispted. i assumed those two points mean that linda vista split into linda vista and la jolla. eventually la jolla changed it's name to playa pacifica so that it became linda vista and playa pacifica.
i cold have definitely gotten it wrong and my apologies if i did.