command key error question

hello all, could use some help on two small issues. noticed both at the same but not sure if they are related.
needed a 2 beat bar for a midi bass part and set locators accordingly but cubebase insists on a 4 beat bar,
the new highlighted part indicates 4 beat span. In preferances > record > midi > snap midi parts to bar, box was
checked, deselected it and now seems to be working fine. Just wondering does this seem the proper fix ?
not overly experienced here.
secondly, may have brushed fingers over the keyboard ? something changed, if I delete a part the next part
is then automatically selected. I looked the over command key list but nothing there seemed obvious.would
like to change this back as it does not work well for me. any help is appreciated!
thanks you danc