We are getting ready to install Exchange 2013 CU6 in our Prod environment and I see there is a CU6 language pack as well. I tried to install the new language pack in our Dev environment, that already has Exchange 2013 CU6 installed, but when I try to run the CU6 language pack it says "The Unified Messaging language pack for English (United States) is already installed. If you're trying to reinstall or update this language pack, uninstall the existing version first."

My question is if I even need to update the pack. My thoughts were that this will update the English files to give us better transcription, etc. Since we only use the English pack, I am hesitant on uninstalling it and it also removing the configuration we have setup in UM.

We are getting ready to install Exchange 2013 CU6 in our Prod environment and I see there is a CU6 language pack as well. I tried to install the new language pack in our Dev environment, that already has Exchange 2013 CU6 installed, but when I try to run the CU6 language pack it says "The Unified Messaging language pack for English (United States) is already installed. If you're trying to reinstall or update this language pack, uninstall the existing version first."

My question is if I even need to update the pack. My thoughts were that this will update the English files to give us better transcription, etc. Since we only use the English pack, I am hesitant on uninstalling it and it also removing the configuration we have setup in UM.

If you are using US English only in the Dial Plan, you don't need the Language Pack. Removing a language pack doesn't affect any config you have set on the Dial Plan.