HI Jon,
There are because
Because cross domain tracking is dealing with a primary and secondary you do have to change the tracking snippet
For Adwords
http://psgrep.com/
by following the steps in the link above you will be able to set up Adwords
I have pasted example below using example1.com as well as example2.com represent the different domains. One of the easiest ways to set this up is to simply use the Google analytics debugger it is available in the chrome store as well as a this incredible resource
Here is exactly what you need to do for ad words because it is slight differences you will need to use Google auto linker plug-in
Step 1: Set up a property in your Google Analytics account.
autoLink plugin
to your tracking code, it automatically loads with your pages and does a substring match on all your links. It then recognizes any links that include a domain name that you’ve specified in your tracking code. Any traffic that clicks a link to those domains get counted as cross domain traffic.
The tracking code snippet must contain these changes every place it appears on your secondary domain.
For three or more domains
Follow the example above, but add the other domains to the autoLink plugin. Even the additional comma here is important:
ga('linker:autoLink', ['example-1.com', 'example-3.com'] );
See what this looks like in full context
The tracking code snippet on your secondary domain(s) should look like this:
https://developers.google.com/analytics/devguides/collection/analyticsjs/cross-domain
for GA
https://support.google.com/analytics/answer/1034342?hl=en&ref_topic=2772342
For cross domain tracking, set up one property in your Google Analytics account. Use the same tracking code snippet and tracking ID from that property for all of your domains.
You need to edit the tracking code snippet for cross domain tracking to work. If you haven’t already included the snippet on all your webpages, you might want copy and paste it into a text editor before continuing with the instructions here. This way, you only have to make the changes once before including the modified snippet on all your webpages.
For details on setup help, follow the instructions on how to set up the web tracking code, but remember: You must customize the snippet using the instructions in this article for cross domain tracking to work properly.
Step 2: Edit the tracking code for the primary domain.
Find the create line in the snippet. For a website called example-1.com, it looks like this:
ga('create', 'UA-XXXXXXX-Y', 'example-1.com');
Make the following changes to the snippet (the changes you need to make are in bold red text
ga('create', 'UA-XXXXXXX-Y', 'auto', {'allowLinker': true});
** ga('require', 'linker');**
** ga('linker:autoLink', ['example-2.com'] );**
Remember to replace the example tracking ID (UA-XXXXXX-Y) with your own tracking ID, and replace the example secondary domain (example-2.com) with your own secondary domain name.
http://www.analytics-debugger.com/en
https://www.google.com/search?q=google+analytics+debugger&oq=google-analytics-debugger
https://chrome.google.com/webstore/detail/google-analytics-debugger/jnkmfdileelhofjcijamephohjechhna
I hope this is more helpful and explains I do not want to copy the instructions Word for Word.
But I think this will give you enough to understand if you have implemented these changes you are all set if not please make the changes.
http://moz.com/ugc/single-google-analytics-tracking-code-for-multiple-sites-when-to-use-how-to-report
TRACKING ACROSS MULTIPLE DOMAINS
autoLink plugin
https://support.google.com/analytics/answer/4627488
https://developers.google.com/analytics/devguides/collection/analyticsjs/cross-domain
I hope this will tell you yes or no
let me know,
Tom
TkSzFTe.png QSlgEdv.png