Hi,
I don't see why it would do that.
The GA plugin uses the order_full_price variable of the order, which contains the total amount of the order. And that's what is also used on your backend listing.
One thing I noticed while checking the code of the plugin is that the currency of the order is not sent to GA (it shouldn't matter normally and it's not mandatory), but mainly that could help.
Try to add the code:
,
"currency: "'.$currencyInfo->currency_code.'"
after the code:
"tax": "' . round($tax, 2) . '"
in the file plugins/system/hikashopanalytics/hikashopanalytics.php
and that will add the currency of the order to the request sent to GA. That's all I got.