Hi Mike,
Just saw this, and while I don't use Lcam anymore, I thought I'd try to help.
I took the dxf and tried to load it into LCam and just got the outer rectangle with no text at all. I then opened it with VCarve Pro and it showed all the text completely. I then exported it out of VCarve Pro and saved it as a dxf and then loaded that file back into LCam, and it worked just fine. Very strange indeed that LCam does not like your dxf type saved.
I'm including the dxf I made and the LCam project for you to play with so at least you'll have the files.
Sorry I couldn't give more of explanation as to why, but maybe Rich will be able to.
Dave