Personally when i make poses or store props. 

I save them without body transformation checked, which i guess is a matter of taste, or whether the pose is very specific. But for me at least my workflow doesnt suit that, as i move the characters roughly to where i want them and would like them to stay in that area, so its very annoying when applying a new poses if you have to move them back all the time. 

Then always save the poses without IK enabled as it can screw up the poses. And always make sure that IK is turned off when applying them as it can also mess things up. 

For any changes to props, i always delete the old one first through poser, if i want to use the same name and just want to make changes to it.