I am in the process of taking over someone else's site collection and
they use pages to act like sites. Let me try to explain this. This site
collection is our intranet. It has a top site that is the landing page
for the intranet. From there it has a few subsites. Under those
subsites, the designer created pages for each of our main departments,
such as HR, Accounting, etc. The person that designed this is no longer
with us, so I am trying to figure out what was done and it seems that
these pages are being used as mini-sites.

Another glitch in this design is that all of our main departments
already have and are using their own site collections.

My question is, is it possible to move the data from this page to
another place in a different site collection? And if so, how would I do
it?