Hi Mark
You are correct that it rather certain did not exist any Grufl 35, so your source are confusing....is it hand-written..?
I have FFA 47 at Kovno within Scholtz Army in Jun 1916, early 1917 the unit moved to Flanders within 4 Army, and was around same time renamed to FA 6.
It seems that they did not have any airfield in Jan 1917 as they were on the move. They probabaly arrived to Bisseghem airfield around 9 Feb 1917...
An AFP did have several duties, the most important was probably transfer of personal and a/c from and to units within an specific Army, you will find better information if you use the search-engine for this site.
AFP 6 was situated at Pont a Chin (near Tournai) from late 1916 to early 1918.
I dont have the location for AFP 10 in the autumn of 1916, but in 1917 one source (not complete reliable) give the location at Kovno.
Which officers are you searching the career of..?

Gunnar