The P5 Help file has this to say about exporting WBSs to P3,
The Project Management module supports a maximum of 25 levels with an unlimited number of characters. P3 3.x supports 20 WBS levels with a limit of 48 characters. The Project Management module will export as many levels as possible until the limit of 48 characters or 20 levels is reached.
Member for
22 years 10 monthsRE: SOS-Import from P3ec to P3
The P5 Help file has this to say about exporting WBSs to P3,
The Project Management module supports a maximum of 25 levels with an unlimited number of characters. P3 3.x supports 20 WBS levels with a limit of 48 characters. The Project Management module will export as many levels as possible until the limit of 48 characters or 20 levels is reached.
I hope that this helps. Good luck!