Google Analytics Tracking tags being stripped; AND checkout page header tag placement

Our recently hired marketing firm is attempting to enable effective google ads tracking and having trouble getting things to work w/ ZenCart. Here's their comment to me (which is pretty much over my head):

1. A user comes to the site from an ad or clicks a link from a blog for example.
2. This blog/ad has tracking on it in the form of "UTM parameters". These parameters have identifiers on them such as: source, medium, campaign, creative and more.
3. The user reaches the site but the website for some reason removes all of the tracking. Which visually looks like this --

• URL with tracking from an external link: https://mywebsite.com/?utm_source=cyclone&utm_medium=social&utm_campaign=test_traffic
• URL after it reaches the website: https://mywebsite.com/

Any experience with this or advice to offer?

Secondly, as a workaround, he gave me a small script to place into the header tag of the order confirmation page. But i cannot figure out how to place that. Can anyone offer me some guidance on that?

Thank you.

Matt

May want to see if an .htaccess file was added to the root of your store and if so, what it is doing. Zen Cart doesn't strip those parameters by default. Something has been done/added/modified to remove them.

mc12345678:

May want to see if an .htaccess file was added to the root of your store and if so, what it is doing. Zen Cart doesn't strip those parameters by default. Something has been done/added/modified to remove them.

We will look at that. Thank you!

mc12345678:

May want to see if an .htaccess file was added to the root of your store and if so, what it is doing. Zen Cart doesn't strip those parameters by default. Something has been done/added/modified to remove them.

It appears that our .htaccess is likely involved as it has been modified by the Ultimate SEO URL's (USU) plug-in which adds significant code. This was done by a developer we no longer use. Anyone have any ideas, advice about how to address this? Should we remove the USU Plug-in? So far, i cannot find any other forum post addressing this type of conflict. Thank you.