DAX Power Pivot return last date

I'm getting the wrong dtate returned when trying use a measure to bring back the date prvious to the 'current date,

Filtered Table using max:=VAR MdateL = MAX(LastT[Date]) 
RETURN 
MAXX(
FILTER(ALL(LastT[Date]),LastT[Date] < MdateL  ), LastT[Date])

Filtered Using If has one:=MAXX( 
FILTER(ALL(LastT[Date]),LastT[Date] <  IF(HASONEVALUE(LastT[Date]),VALUES(LastT[Date]) ) ),LastT[Date])

So if the current date is 07/01/2020 and the previous 01/01/2020 so if in Rows I have 07/01/2020 values 01/01/2020

but it keeps adding one so I have 02/01/2020, im pretty certain the formula is ok so can't see whats causing it, i've checked data types,

please help.

Workbook attached,

Richard