Hrm... not so happy news... it looks like when y'all updated the wizard for object property checkpoints, you decided to deprecate object checkpoints. I don't necessarily like this because having a nice "Object Checkpoint" option in the keyword test operations or in recording made capturing, storing, and building an object collection in "Stores" for doing a check a lot more intuitive. While the same type of check is available by using the "Objects.Compare" via Call Object Method, the "Check" method was much nicer as it gave detail information about everything that was mismatched.
FYI, you can still get to Object Checkpoints by right clicking in a keyword test, selecting "Insert New Operation", going to the Checkpoints node in the tree and selecting Object Checkpoint. I assume that, since the item is deprecated, at some point in time this will go away as well.