From Guy Dempsey's Napoleon's Mercenaries: Foreign Units in the French Army under the Consulate and Empire, 1799 to 1814. London: Greenhill, 2002.

Page 128: "Napoleon had apparently intended that both regiments of Lancers would take part in the Russian campaign but, direct orders to the contrary, Marshal Soult persisted in keeping the bulk of 1st/7th Lancers with him until the end of 1812. It seems, however, that at least one squadron of the 1st/7th made it to Russia. One piece of evidence in this regard is the fact that Lieutenant Konopka of the 1st/7th Lancers was wounded twice in Russia during 1812 (on 16 June and 2 December), but this evidence is not conclusive because his presence in that theatre may simply have been the result of some personal connection with General Konopka. Another piece of evidence -- also inconclusive, since it is not confirmed by other sources -- ist the statement in Chelminski, p. 157, that Colonel Stokowski and 100 men of the Regiment were part of the escort for Napoleon when he left the Army on 6 December. According to Chelminski, Napoleon ordered the Lancers to kill him if he were ever in danger of being captured. The Lancers are said to have replied haughtily that his order could not be followed because if such a danger did arise, it could only mean that all the Lancers were already dead themselves."

Martinien states that Lieutenant Konopka was wounded on 16 June, but in the vicinity of Seville while on courier duties. It does list a Lieutenant Konopka being wounded at Wilna on 2 December. Since the distance between Seville and Wilna is about 3800 km and that would mean despite being wounded, he would have had to travel on an average of 22 km a day to get to Wilna by 2 December. I suspect that there were two Lieutenant Konopkas. Martinien does not show any other officer in the 7th Lancers being wounded in Russia in 1812.