Fuel pumps fail... period. There are a lot of things that can impact the life of a LP. Fuel quality, electrical connections, location...
You can and should have this one replaced under the warranty, have the dealer check out the VP44 THOROUGHLY, install a fuel pressure gauge, and either relocate the LP to the frame rail after it is replaced, or wait until your warranty expires and install an aftermarket system. The OEM LP is a perfectly good pump, it is just in the wrong location.
Fuel pumps are made to push fuel, not suck it. . Where it is now, it has to pull the fuel up to 8 feet and up on, then push it up 1 and forward 1.
IMO I would move it to the frame rail, install larger lines and of course the fuel pressure gauge and be done with it.
The relocation can be done for under $100 and a couple hours of your time.
An after market kit can be installed for between $250 and $500.
Some people will install the larger banjo bolts to increase the available fuel pressure, but this does not address the fact that you are still pulling the fuel from the tank which is still a bad thing.
EDIT - VP44's do not like to supply their own fuel (dead LP, and like water even less. Depending on how long your LP has been out, severe damage may or may not have occurred to your VP. I would recommend that you leave the fuel system alone (at least 10k miles) after the LP has been replaced to see if your VP is going to make it. If you alter the fuel system (relocate the VP, after market system) the warranty on the VP will be null and void even though the failure was caused by the first dead LP.