Converting 24-44 sample rate to 24-48 - without losing video sync?

Hi,
I am doing a video shoot for a shot film and I need my final outputs at 24bit and 48khz for audio. Video frame rate is 24fps.
I am planning to do live sound recorded externally for good quality when compared to camera internal records. But I have a macbook which is 9 yrs old and I can only use garageband with my focusrite saffire6 usb audio interface and I cannot use logic in this old macbook.
So my questions are
1. Can I record live sound using garageband as DAW and export files at 24-48 from GB? I find it can do only 24-44....
If not...
2. Can I open the garageband project in my imac at my studio with (Logic Pro X) later at the end of each day of shoot , and export the recorded tracks of GB to 24-48 wav or aif from logic pro x ? ( I dont want to change the logic pro x project to 24-48 from 24-44 as the pitch of the recorded voice alters.
If i export the tracks at 24-48 from a 24-44 project and then re-import it to another logic pro x project (24-48) what exactly changes ? Will i lose video sync / lip sync ? will there be any noticable quality loss ?
Pl. do help me with my above questions. I will be converting small small audio clips of the shots related to the video.
I dont want finish my movie then change the sample rate of the entire audio track....
So will the video / lip sync be lost in any way ?? Is 24-44 to 24-48 convertion recommended ?? as I have only my old mac book only to use to record audio on the shoot location and i dont want to carry my imac to the location... I will be using my rode video mic pro and saffire 6 usb interface in my old macbook i am not in a position to invest on another recorder.
Looking forward for your replies and comments. Thank you.
Kind Regards,
Arun Kanth

Hi
Nik on Logic wrote:
I know 48 is the norm ..they say for video.. but i am working only with audio here that I am delivering.
You are delivering audio for a video project.
Nik on Logic wrote:
I am going to deliver a long bounce which then the director will put in his system and mix with the other elements of the film. dialogue, etc.. I was not asked for a 48 file .. and in the past I was always fine by delivering 44.1 audio files to editors or mixers..
Arguably, you should've asked what format they require the finished files to be in (ideally before you started). Probably best to check now what they can/will be able to work with. Then you will know what must be done with the work you have in progress.
CCT

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Converting 24-44 sample rate to 24-48 - without losing video sync?

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