An anecdote on French Wikipedia mentions a Me-262 prototype crash in Switzerland and the offer of a dozen Fw-190 to the Swiss state to get the carcass back. Is there any reference for this?

So I stumbled upon this bit of trivia today

En 1944 un vol expérimental du Me 262 se termina par un accident près du lac de Constance en Suisse. La Luftwaffe proposa alors plus d'une dizaine de Focke-Wulf Fw 190 à la Suisse pour récupérer la carcasse du Me 262.

Which roughly translates to

In 1944 a Me-262 experimental flight ended in an accident near Bodensee in Switzerland. The Luftwaffe then proposed more than a dozen Fw-190s to get the Me-262's carcass back.

It has many Internet red flags as far as trivia goes: it's about Nazi Germany, secret government arrangements and experimental weapons. To me it has a very high chance of being fake, and I can't seem to find a source for it. Is there any record of this? And if there isn't, is there any record of Nazi Germany losing prototypes and negotiating an arrangement to get them back at all?

Thanks in advance for your responses!