There is a parameter on the "master page" which allows you to re-map prograam locations
Look in the Master for:
There will be two sets of numbers, as you scroll thru them, make sure 0=0...127=127 etc. The first number is the selected program number, the second number is the program you want to be in that location. Normally, program 005 is accoustic guitar (the first number) but you can select program 000 piano (or any patch) to be at location 005 by remapping (changing the value of the second number).i.e. 005 > 000. To my knowledge, there is no default for returning all programs to the factory settings. There are some programs which can not be over-written.