You shouldn't have to lift it off. Bring up a table and sit it next to
your mill table. Adjust the knee height so it matches. Remove the handles
and lead screw and slide the table off onto the other table. - GWE

I guess you mean slide it sideways onto a table; I'll measure this up
tomorrow, there should enough room to slide the table fully out of the
knee, bearing in mind that the mill is positioned across the corner of my
garage; I just need to find a sufficiently high (33") and sufficiently
strong table. Is there any reason to do it this way, given that my hoist
should have the capacity to lift the table?
Martin

It has to go sideways anyways, right, to get it off the dovetailed ways?
I've done it both ways, with a hoist and with a table, and I recommend the
table. The hoist wasn't easy to connect solidly to the table. I used T-nuts
threaded with hoist rings and they tended to slide. And this was a wimpy
little Bridgeport table. You don't want a big mill table turning on its
end in midair on ya. Anyway, if you see a good way to do it with your hoist
have at it, will probably work fine. - GWE