As with basic race change your account is semi-reset as told in the Help section
Change Race (#) Like name changes, race changes are limited. Changing race is also costly - you will lose all technology upgrades, all 'super' trained units, all currency in your 'bank', all covert/anti-covert agents, and all weapons. You keep your untrained, covert levels, UP level. More detail is available when clicking this option.
When in the reset area it says
http://www.stargatewars.com/reset.php
NOTE: You can change advanced race to advanced race as long as you have race changes left to use. There are no ill effects.
BUT - If you change races (to a 'basic' race) you WILL NOT BE ABLE TO CHANGE BACK to an advanced (post ascension) race -- at least not without reaching ascension again.
Advanced Races Benefits:
*Bigger weapons
*Each time you reach ascension level...either initially or with each ascended infusion -- you get a 5% bonus to covert, 5% bonus to attack, 5% bonus to defence, and 5% bonus to income.
(If it was you 2nd 'infusion' after initial ascension, you would be at 15% in all stats, as an example...)
*Be the envy of all basic races!
If you change races to a basic race, and choose to use an advanced race again on repeat ascension, you start at the minimum 5% bonus ... even if it is your 2nd, or 3rd, or 5th, time to reach ascension!
In short - you lose all cumulitive bonuses when you change races away from an advanced race! And cannot choose to be that race again until ascension is obtained again!
On the plus side, you can change races with no penalty (aside from that mentioned above!!)
Your weapons will be sold at cost, and the Naquadah deposited into your offsite storage.
Your cumulitive race bonuses, of course, will disappear. You will revert to JUST the bonuses of the race you choose.
The note says that it would have no effect but im not sure....
So if anyone can answer the question , what actually happens when changing race ascended to ascended?



