I'm not familiar with your tagging software (I use ImageIngester Pro and Houdah Geo) but have a question, does it write the GPS data to a sidecar or directly into the raw file? If it's in a sidecar, try moving them into a separate folder and see if the files will then render correctly in camera raw. If the data is written into the raw file (generally a bad idea), it could be stepping on some of the other metadata that CR uses in processing. Also wondering if it may be the white balance data that is being effected? Have you tried manually tweaking the WB to eliminate the color cast?