moving

Hello,

I have three indoor-outdoor cats. They are 5-7 years old. I'm
thinking of moving to another place, which is one mile away from
where I live now. I'll keep the cats indoors at the new place
for a month, but after that I would like to let them go out again.
Will they go back to their original place and stay there, or
will they stay at the new place?

Thank you,

leonid