In the Cabinet Editor,
Open the Standard Base Frameless,
Select the back to highlight it,
Right click and choose Phantom Parts,
The Phantom Part dialogue shows all parts instead of just the selected (highlighted) part.
We just released a new version of eCabinets that corrects this issue. You can either click the link on the Software Install/Updates page on the eCabinets website, or do Check for Updates in the software. This should be version 6.2.12.1.