You can Filter the components or set the BOM to not be Recursive.
You can also rename (with the assembly in session) the current bearing assembly, then bring in the 'one piece' assembly and Replace the renamed one with the one piece one. You can do the replace on all the old bearings by selecting them all first; Creo will prompt for all the placement replacements. Should take 2 minutes if you have less than 50 bearings to replace. Use Find to select all the old bearings.