Anyone else having this problem? I can choose 'Yes' or 'No' for this option for any carrier, and the setting seems to take effect. But I've noticed that the very next time I re-visit that same settings page in the future (after navigating away), neither 'Yes' nor 'No' is selected. It also doesn't seem that I can prevent the 'Enable Package Breakup' option at all - it
always breaks up packages...
Also, I tried limiting my USPS packages to 20lbs, but this setting is also having no effect.
FWIW: I am running 7.0.7.14481. I have also submitted a support ticket for this, but unfortunately support wasn't too helpful. They essentially told me that I probably had something configured wrong. But I remember seeing this exact same problem during my evaluation of the software.