Hello Atlas,
currently the recycling receips are changed to scrap the item into cash, so its not Space Age compatible,
I like your detail dedication to this mod, please check if you can make it work the the DLC.

Seems like the recycling is default to the trading recipes. I need to find a way to make it not do that.

I haven't made it that far into the game though. Thanks for pointing it out.

auto_recycle=false,

{
type = "recipe",
name = "ATF-buy-solid",
category = "ATF-trade",
subgroup = "ATF-buying",
energy_required = 5,
auto_recycle=false,
enabled = true,
ingredients =
    {
        {type = "item", name = "ATF-cash",amount =  1}
    },

    results = 
    {
        {type = "item", name = "solid-fuel", amount = 20},
    },
},

Add it like that under Buying

Also as a suggestion for more compatibility
Append
-magazine
to the end of your ammo categories
"545x39-magazine"
This will increase your compatibility with other mods.

I made a mod to fix the recycling recipe as I also have a playthrough with ATFELPN installed:
https://mods.factorio.com/mod/RecyclingFix