G Cache Taking Over Updates?

I've done a lot of testing before posting this but I'm quite sure that G cache actually takes over site representation for a given user if they've been there for a certain instance of your test. I manage many sites and was trying to change a graphic image on a test page, of course just replacing it without changing the name and uploading, and after several attempts, even replacing via cpanel file manager, the new image does not show up. I opened up a new site and did a similar test in my developing environment and as usual no problem...I am very curious about this.

Are there limitations to changing files within a page while a test is active???

Multiple Test to Single Conversion Page

One of the issues I ran into while setting up Google Optimizer was whether or not I needed to add more tracking code to the conversion page since it already had tracking code from another experiment. I ran into an error when I didn't do it, so I pasted another set of conversion page experiment scripts below the first set on the page.

The first experiment was an actual test, as I mentioned in a previous post. It was a fake Test Page, but a real conversion page. Now I've stopped that experiment and Google Optimizer directs you to remove the code scripts from the Test Page and Conversion Page.

This prompted me to go to the Conversion Page and compare the two tracking scripts from the two different experiments. One line seems to identify the experiment, for it is the only line that is distinctly unique with each experiment:

urchinTracker("/2964349575/goal");

(note: I changed the number slightly because at this point I'm not sure whether I should publish this number....probably doesn't matter but I'd rather be safe.

The script from the other experiment was identical except only for the number (all text the same)

In conclusion, with something like a sales purchase thank you page on a large site, you have the potential to have many different experiments all pointing to the same Conversion page. This will create a long stretch of multiple tracking scripts...unless there is a cleaner way to do it?