Lightroom :: DNG Files Did Not Transfer Properly Into New Computer?

On December 19th, I just went to Mac from Windows.  Bought a new computer (OS X) and transfered files from an external hard drive.  I did not do the stardard catalog transfer and had many pictures I wanted to delete, so I transferred the old pictures through the "Another Catalog" feature import.  So far so good.  All worked very well for 2 years worth of pictures... while I was transferring CR2 files.  Did not lose any images until I hit the following snag. 
 
I was still on the old Windows pc on December 11th when I decided to start using DNG files and started using "Copy as DNG" option for import.  On December 19th I received the new computer and started the transfer process.
 
The DNG files (Copy as DNG) which I started using on Dec 11th did not transfer, not one image.  I lost all the information for these files.  The actual DNG file is fine, but all the catalog information with all the adjustments do not transfer as the CR2 files did.  At first I just got an error message when I transferred the images... saying error occured.  I did not know why the transfer was not happening, and on further investigation I realized that the correct transfer stopped on Dec 11th.  That is when I realized it must have been because of the DNG "new" file format.  I decided to just transfer one image at a time to see exactly what would happen and Lightroom5 said "the original file is not available".   I then realized that when I transferred the images from Dec 11 thru Dec 19th I COPIED them from the external drive as "Copy as DNG"... which means that I was trying to transfer and copy as DNG a file that was already copied as DNG.  I made this error because I had just started using that feature and did not remember to switch to just "copy" for the transfer for those dates.  Could this error have caused the non-transfer of the files for those dates?
 
Bottom line is that I have lost all the work for that one week which included a number of images. 
 
When I open the old catalog I see the image information but a blank space for the missing images... right next to each image it is the DNG raw file..side by side.  I cannot get the old catalog to recognize the individual catalog information for each image I worked on. 
 
My question is... can anything be done to recover that information.  Missing photographs is not the problem.  It appears either my error of double copy of DNG format is the issue OR I had set the preferences incorrectly somewhere.  I am aware that I could have embedded the RAW file information into the DNG file, but this was not checked off in the preference menu.  Could there be any comparability issues between OS X and Windows?  I do not think this is the problem but just putting it out there.  My greatest fear is thinking I am using DNG incorrectly and will lose everything again in the future. 
 
BTW, the original CR2 files are not avalable to me any more... computer hard drive was erased as it appeared all the information had backed up properly.  And the backup files on the external hard drives are DNG format.  So no CR2 files are available at all.