I would recommend the following approach:
If you have Preware installed, get Save/Restore. If you don't have Preware installed, get Preware installed first.
Some of the data (for example, Memos) will get restored through the Palm profile when you log in to your existing profile with the new Pre3. But not everything. Most of the rest can be transferred with Save/Restore.
Note that logging into your existing Profile with the new Pre 3 will likely wipe your existing Pre.
On your old Pre:
- In Preware, update your saved packages list.
- In Save/Restore, save all application data.
- Backup your USB partition to a PC.
On your new Pre3, first activate the phone. If you are in an official country with an official SIM, just insert the SIM and go through the first activation procedure. If you are not in an official country, and you want paid app catalog access, find the thread about Impostah and paid app catalog activation, read it carefully and follow the advice in that thread BEFORE INSERTING A SIM.
When you need to log in to a Palm profile, log in to your existing profile. Your old Pre will be wiped. You did make all those backups, didn't you?
So next, restore all that data to the new phone:
- Restore the data on the USB partition with data from your PC.
- Install Preware. With Preware, install Save/Restore.
- Exit from Preware. Start Save/Restore.
- Restore the Preware application data.
- Start Preware, go the the saved package list screen and "install all". This will install your previous Homebrew apps (should you have had some).
- Now start each of the software you want to restore and exit again.
- Start Save/Restore and restore all application data.
An alternative approach, if you want to keep your original Pre connected to the existing profile: create a new Palm Profile for the Pre3. In that case, you will not get your data/apps restored automatically. For the apps, repurchase what you need and download the rest from the HP App Catalog. Then, follow the restoration process. You will get the data of apps restored via Save/Restore, but you will miss some data that is stored in the Palm profile. Likely, that would be Memos and SMS and any Contacts only in your Palm Profile and so on. I have never run into this difficulty myself since I keep all that data in Google's cloud, and so it syncs to all my Pres. Memos won't sync with Google, but I have no important information in them.
Hope this is of some help.