Both FTX PNW AND MyTraffic have their own airport files for YVR.. They are both meant for the default YVR and WILL conflict and cause issues with FSDT CYVR. You need to remove the offending files.. You should do this for EVERY airport that you have addon scenery for.
The FTX PNW files to remove are (no need to delete them, just move them out of the scenery folder)
ADE_FTX_PNW_CYVR_Vancouver_Intl.BGL
FTX_PNW_objects_CYVR_PLC.bgl
ADE_FTX_PNW_CYVR_Vancouver_Intl_CVX.bgl
I can't say what the MyTraffic file is to remove as I won't pollute my sim with that AI, no offense