The P6 and Contractor installer no longer includes BTRIEVE database engine files necessary to import P3 file format. These files were removed from the P6 and Contractor installer due to licensing issues with BTRIEVE software.

Prior to Project Management version 6.2 and Contractor version 6.1, users could Import/Export P3 data without having P3 or SureTrak installed on the machine. 

However, with Contractor version 6.1 and Project Management version 6.2 and later releases, P3 Import/Export functions are disabled unless P3 or SureTrak is installed on the same computer.

See attached document and converter file utility that can be used to convert a P3 file into a format that can be used by P6.