X2 extended

A tricky question: I used to hold X2 with single entry, so when I left China to go to France in May, on my way back to China I`ve used this entry. Then I applied for the extention of X2 in July (from China) and I`ve had it entended till September 30 (the number on entries is 1 again). Now, I had to come back to France and I`m planning to come back to China on the 28th of September, using that 1 entry on the visa......Is there any chance that my logics is wrong and the extended X2 didn`t annul that previous entry?