OK here's the situation.
 
I started playing UC2 on my main PS3. I only played the SP campaign, and earned $20,000 for unlocking a few trophies. Then my wife wanted to watch TV, so I used the kids PS3 to play UC3 MP. Where I leveled up to level 7. So now here's the dilemma
 
- PS3 #1 has SP game saves
- PS3 #2 has MP game saves
 
- When I play PS3 #1 will my stats still be the same, or are they locked on PS3 #2. Im sure that my level will be the same, but what about the monies I earned for upgrades??
- What can I use to transfer the game saves? USB storage device??
- Can I merge the saves??
 
Any help would be appreciated.

you can transfer with usb

I'm about 95% sure your MP stats and money are saved on the server.

If MP money and unlocks are saved to your PS3, Naughty Dog will have it set where you can't copy the save. Otherwise cheaters will upload their MP save files online for everyone else to use.

Just transfer your MP save via USB Mass Storage device if it allows you to.

Your game saves will be on the ps3 that you originally played the game on and your online stats shouldn't matter as long as its the same psn ID. (i think lol)

When i sold my old ps3 and got my new one, i had to start my killzone 2 SP campaign over, but the online stats were still the same

Wow you read my sig!

OK so my online stats are just fine. But if earn a trophy on PS3#1 it wont show up on PS3#2 untill I sync it with the trophy server. Then it's all ok.
 
And if I buy an upgrade on PS3#1 I have to buy it again on PS3#2, that kinda of blows, but oh well at least I get to play!!!!