There is a sif cli provided for this. You can find out more information from the developer guide: https://www.vmware.com/support/developer/studio/studio26/studio_developer.pdf
For a full list of all the options you can run: /opt/vmware/bin/sif -h
For the basic export import case here is an example.
Assuming I have a profile caled ubuntu12.04x64.xml which I have successfully built a VM with I can:
1.) Export or create a sif file based on the profile
/opt/vmware/bin/sif -e /opt/vmware/var/lib/build/profiles/ubuntu12.04x64.xml -o ubuntu12.04x64.sif
2.) Import that sif file into another Studio
/opt/vmware/bin/sif -i ubuntu12.04x64.sif -b <base directory>
To lay it out as it was on the originating you could use -b / for the root directory as base
There are other options there as well for including an iso for example if that is what you want.
After I exported the profile from a studio and imported to a new studio. I could generated a build on the new studio, but the build looks not able to get the update generated on the old studio. When I issue :
vamicli update --check
Failure: Error validating the digital signature of the update manifest. Please contact your vendor.
Is there any files I need to copy for the migrated studio to generate build and update which can work with the previous build and update?