On Redirect Parameter ?t=X is Added in Threads URL

[ank1t]

Background
We are upgrading Vbulletin forum from 3.8 to 5.1

Issue
On redirects a parameter is added to thread URL.

Example:

PHP Code:

https://www.domain.com/memberarea/forums/showthread.php?t=115889 


to:

PHP Code:

https://www.domain.com/memberarea/forums/forum/a/b/119376-title-of-post?t=115889 


Solution needed:
We do not want ?t=115889 to be present in URL Slug.

We are hosted on Windows IIS server.
Please suggest is there a way - lets say a mod-write code - which will append this piece of code from appearing..