FSDT KLAX never had SODE jetways to begin with. The jetway which were initially included in older versions of KLAX were standard simulator jetways (those working with CTRL+J), so in addition to be clearly much worse from a graphic point of view, they were also very limited, because they couldn't work more than 1 jetway per gate and they also have lots of bugs, and don't integrate with GSX well.
So, after GSX Level 2 came out, we updated KLAX to use GSX/SODE jetways instead of the old default (non-SODE) jetways, which are clearly better, and are the only jetways we have now for KLAX.