when working on sound design for video in Logic 9, i use a project template with a sampling rate set at 48000khz. the source material i use vary in sample rate, hence i need to convert it all to 48000khz to match the project sample rate. up until now, what i always did, was to use an external batch audio processing tool (such as the great Sample Manager by Audiofile Engineering) to quickly convert all my material to the desired sample rate. recently switched back to Logic as my main DAW, i wanted to let Logic take care of sample rate conversions when necessary. so, i set my project preferences to include audio assests, copy all used audio files to project folder, etc. and automatically convert sample rates when there's no match. this seems to work properly, however, Logic's conversion also seem to pitch shift (more than slightly) my original material - which never happens when i use an external conversion utility (i usually need to convert from 44100khz to 48000khz). why is that?
say i turn off the auto conversion thingie and import material in different sample rates into the project while working, then export it all at 48000khz. will i have the same pitch-shifted artefact?