This seems to be working for me for all years, one at a time:

-Install ProSeries for the year onto new computer

-Close ProSeries on new computer

-Copy the following folder from old computer to the same directory on the new computer, in this order:

        -ProSeries>ProNetXX>XXData

        -ProSeries>ProNetXX>common

        -ProWinXX>HomeBase

-Open ProSeries & everything seems to be working fine