How to import Bridge Labels into Lightroom 3.4

Question

I have  close to 500,000  images all neatly labeled in Bridge.  They have the color labels for: (red) select,  (yellow)second, review, to do (the basic standard adobe created labels)  nothing customized.
After importing my entire collection into lightroom (27 hours) nothing at all remained of these labels.  Making this thing entirely useless.
I cannot imagine why two adobe products would not share defaults like this or am I missing something obvious?
Does anyone know how to import the labels from Bridge into lightroom? (keep in mind that I know nothing of lightroom so make it baby steps)
thanks

Answer 1

You also wrote:
"Even the stars from Bridge do not register in Lightroom..."
Yes, they do.
Allow me to do a bit of explanation how LR works, here:
Bridge and LR work differently, and it is important to understand this difference.
Bridge works as a file browser. Whatever you put into a folder / or a drive  Bridge will "see" it  (as long as it is image-related).
For instance if you do a name change for an image file or a folder in your OS, Bridge has no trouble "seeing" the changed file or folder.
LR doesn't work as a file browser. LR creates and works with a database called Catalog. LR does not "see" an image-file unless it is imported. Importing means adding it to the Catalog. You can have any number of images on a drive / in a folder that LR does not "see" as long as they are not imported into LR.
That means, -  in the case of a change of file name and/or folder name that you do outside of LR (for instance in Bridge), - that LR cannot "see" this folder / image file. LR still has this image / folder in the Catalog under its old name and when it looks for it, it can't find it because the name has changed. LR then flags this file / folder as "missing". "Missing" in this sense doesn't mean that the folder  / the image is not on the drive; "missing" means that LR cannot find it.
LR can also create, work with and read xmp-files, also called sidecar files. XMP-files are small files that contain mnetadata, such as the camera settings, the date & time, the title, caption, etc - but also develop / edit metadata. When you use the Camera Raw feature in Bridge and edit the image, Bridge writes the data into the xmp-file. Also, things like color labels and ratings stars are written into the xmp-file.
To bring these into LR you have to make LR read the xmp-file. You do this in the Library Module by going to >Metadata > Read Metadata from File.
But be careful here. When LR reads the data from file that means also that whatever you did in LR (and did not save to xmp), will be overwritten when there is a conflict. So for instance, if you did image editing in Bridge, and late you did image editing in LR (on the same image) and you then select "Read Metadata from File", your LR-edits will be supplanted by the Bridge-edits.
To resolve this you have to make LR your only image editor. Also it is advisable to save your LR edits to xmp. You do this via Ctrl / Cmd. + letter "S" or > Metadata > Save Metadata to file. If you do this Bridge will be able read and display your LR-edits.
WW