John
I doubt we will ever see a locked thread from your end...
Knowing my lousy German (but
not as lousy as my French, not to mention Polish, hint,hint

) I am checking what Peter Taghon says in his second volume of LG 1.
I.(Z)/LG 1 Umbenneung am 1.11.38 in Barth als I.(Schwere Jagd)/LG 1 aus II./LG Greifswald.
Umbenennung am 24.11.38 in I.(Z)/LG 1; Umbennung am 1.11.39 in V.(Z)/LG 1.
Although a second hand source, I have to presume he has researched the topic enough to have some kind of first hand knowledge about the dates in question, and during the Polish campaign the Bf 110 were used by I.(ZG)/LG 1.
I have no idea why two at least seemingly passionate individuals like Marius and Franek are worse than cats and dogs on this forum. They were like that already when I became a member. In the old days such problems were easily solved. Gentlemen! Pistols or swords??
Cheers
Stig