Hi Liz,
It can depend on the system resources. I had a site with about 10,000 files that took 2 hours. But they may have a slower system than yours. I can't be sure. But at the very least, I would expect it to take an hour or more. If it's faster you'll be pleasantly surprised.
Softrak support may have a better answer, but they're 3 hours behind us.
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Dan Desautels
DezTek Solutions Inc.
Thunder Bay, ON