If you right click on a sample theres the very usefull option "Replace sample by.." so you can change the sample by another. It is however greyed out. Is this a bug?
This option is intended to be used for divisions only. Let's say you have an instrument fully set (with a lot of parameters in the table), if you want to change a sample in the instrument you select the corresponding division and you use "replace". The parameters will remain for this division but the sample changes.