Merge pull request #37803 from ifreund/migrate-direct-item-spawn

Migrate direct item spawns

src/mapgen.cpp

@@ -23,6 +23,7 @@
 #include "enums.h"
 #include "faction.h"
 #include "game.h"
+#include "item_factory.h"
 #include "item_group.h"
 #include "itype.h"
 #include "json.h"
@@ -1057,7 +1058,9 @@ class jmapgen_loot : public jmapgen_piece
 
             // All the probabilities are 100 because we do the roll in @ref apply.
             if( group.empty() ) {
-                result_group.add_item_entry( name, 100 );
+                // Migrations are applied to item *groups* on load, but single item spawns must be
+                // migrated individually
+                result_group.add_item_entry( item_controller->migrate_id( name ), 100 );
             } else {
                 result_group.add_group_entry( group, 100 );
             }