Nav 2013R2 Web Client GetURL incorrect

Hi I am having issues with the GETURL functionality. I use it to get Nav Url's to a third party application. The windows client url works perfectly, but the web client is wrong and I cannot find the configuration that tells GETURL how to build the url.

http://myServer:48900/DynamicsNAV71_Instance1/Webclient?company=theCompanyName&page=99000831&bookmark=35%3bHRUAAACLAwAAAAJ7%2f1IAUABPADEAMAAwADEAOQAw

the actual URL that it is supposed to be.

http://myServer:48900/DynamicsNAV71/Webclient?company=theCompanyName&page=99000831&bookmark=35%3bHRUAAACLAwAAAAJ7%2f1IAUABPADEAMAAwADEAOQAw

It is tacking on _Instance1 to the InstanceName and I cannot figure out why. If you could point me in the direction of where that is configured that would be great.

*Also I should note that when I open the Windows Client -> Help -> About This Page in the URL fasttab the WebClient URL is incorrect as well. Same as above.

Thanks.