CcpNmr Analysis V2 projects are converted to V3 on the fly. This means that you can simply drag and drop a version 2 project folder from your computer's file browser into V3 of Analysis and it will open automatically. Alternatively, go to Project / Open ... and select the V2 project folder you wish to open. For larger projects you might have to wait a minute or two for the process to complete, but no manual intervention should be necessary.
All the data from the V2 project is accessible from the sidebar. Spectrum contour levels and colours are not preserved and neither are the V2 'Windows', since the whole window management philosophy has changed between V2 and V3. Have a look at our Customise Spectrum Display and Working with Modules sections to find out more about setting up your windows as you would like. What had been Resonances in Version 2 has now become NmrAtoms, NmrResidues and NmrChains in Version 3. See our NmrResidues tutorial for more information on these.
Once your project is imported, Version 3 will create a directory of the format ProjectName.cccpn in which the new V3 project is saved. All V3 project directories now end in .ccpn.