If you need to import your old sessions from RaceChrono v1.45 (Symbian, Windows Mobile and the hardware product), you can follow these steps:
1) Copy the Sessions\ and Tracks\ folders on the old device to the new device under /RaceChrono/ folder at the root level of internal storage. So your phone internal storage storage will have /RaceChrono/Sessions/ and /RaceChrono/Tracks/ folders. You can also import single sessions by copying only individual *-plots.bin and *-session.bin pairs.
2) Start RaceChrono and then click the "Manage content" button at top of the main screen. It will offer a task to import v1.45 sessions and tracks.
Notice that you might not want to import the tracks that are downloaded from the Track Library, as RaceChrono will detect and download missing tracks automatically from Library when the session is opened.