If you are feeling adventurous you can try using this new tool (
http://www.algonet.se/~stoffe/JRLMerger02b.rar). It's a tool for merging two global.jrl files together. Do note that this is still in the testing stage though, and may not be very foolproofed. It worked fine with the modded JRL files I've tried it with so far, but I won't guarantee it works with everything under all situations without problems.
You'll need to extract an unalterd global.jrl file from dialogs.bif with KotorTool first though that it can use to compare against to spot changes. Then you just select all three files in the tool and press the "Merge" button, and hopefully it will do its thing.
If it does work, please let me know. :)