Last years rainfall total carried into 2019

Went away 2 days before the end of last year, returned 5 days later to see the Year To Date rainfall includes last years rainfall and 0.4 rainfall for this year. The 0.4 rainfall for this year does not show in Month To Date on main screen. The Rain For Each Month Of The Year graph has reset but not showing the 0.4mm rainfall for 2019, but 0.4 showing in the Last 7 Day’s Rainfall. The Davis Vantage Pro 2 console shows the 0.4 only for the month.
WD Ver 10.37S85. Davis Vantage Pro 2 running on Windows XP with latest updates.

do you happen to be using the aus 9am rain reset option?
you can set/reset the year rain total under control panel, offsets and initial rain

Yes, I am using the Aussie 9am rain reset option. How do I change the log files?

how do you mean exactly?

I have changed the rainfall amount. Thanks.
The Databackup-databackup-12019lg.txt and Logfiles-12019lg.txt and 122018lg.txt have the 2018 rainfall amount. Can I automatically change these files or do it manually?