Note: If you have existing click tags, you'll need to chain, or concatenate, the tags together. Facebook-provided click tags are auto-enabled to redirect to other click tags that are third party redirects. The final chained click tag would appear like the example below. Please use the URL preview functionality to ensure that the chaining works.

https://ad.atdmt.com/c/img;adv=1111111111111;c.a=12345;p.a=12345;a.a=12345;qpb=1;cache=12345;?h=https://my.existing.clicktag.com/...