@altryne, we do have a recent update which does forward all query parameters during a redirect. There is more about this here:
Note, there are limitation as described in the post above. Quoting that topic below:
The only exception: If your rule target already contains a query string, the proxy will only pass that along, nothing else.
Examples:
/api/* https://my.remote.api/:splat 200!
will pass query string unchanged/api/* https://my.remote.api/:splat?key=secret-key 200!
will only ever passkey=secret-key
Does this update meet the requirements for your redirects?