try this:
in WD
action, convert WD logfiles to data files
choose the 42018lg.txt file
then click on convert
choose the 52018lg.txt file
then click on convert
then click on recreate last 31 days data file
try this:
in WD
action, convert WD logfiles to data files
choose the 42018lg.txt file
then click on convert
choose the 52018lg.txt file
then click on convert
then click on recreate last 31 days data file