With UTM parameters you are able to detect the exact place of conversion.
You can check it in your Google Analytics here: Behaviour > Events > Overview. Click on OptiMonk by Event category. Choose “Event Action” for the first dimension and “Page” for secondary dimension. Now, you can see where the different events (shonw, close (x), no, filled) happened. If you choose only “filled” on the right handside then you will only see the places of filled events, so that you can find out where your conversions took place.