Some client rows 1 have null assetKeys and will be deleted from client file

End of null assetkeys Data
Some client rows 1 have null assetKeys and will be deleted from client file

	ric	position	quantity_bought	avg_buy_price_lccy	avg_buy_price_pccy	quantity_sold	avg_sell_price_lccy	avg_sell_price_pccy	totalpl	modifiedRic	assetKey
897	VAU.AX	-332629	0	0.0	0.0	0	0.0	0.0	-3326.3	VAU.AX	NaN