Tested in Space Exploration Krastorio 2

Set basic 2 chests: Provider and Receiver to see how mod functions

Set provider for iron plates 50 buffer, 50 limit

Set Receiver for iron plates 50buffer, 50 limit

Transferred 100 iron plates

After 100 plates that have been teleported receiver keeps on spewing "fake" iron plates, that disappear once moved to players inventory.

Hey man, are you sure you don't just have this mod also handling Logistics? There's no conceivable way for it to make "fake" iron plates, it seems likely that there's just more plates in your inventory than you have set as your limit and so it's taking them away as soon as you pick them up like you told it to do.