Lucas:

In AR & AP Company Profile you can define how many days of history to keep. I suspect that 2014 & 2015 are beyond that set time frame so the data has been purged.

Hopefully you are following a best practise approach, backing up and keeping a copy of your database at each year end.
_________________________
Douglas Dickie
AccSys Solutions Inc
Phone: 1.888.534.4344
ddickie@accsyssolutions.com