Calke Abbey's stableyard was used during filming of the eighth season of the drama.
Plans to improve the overflow car park and add 271 spaces were submitted and scrapped last year.
Actor Cillian Murphy was in Derbyshire for many scenes that were shot at the Grade I listed home.
Until last year the butterfly was previously unrecorded in Derbyshire.
A major filming project is taking place through August and September at the National Trust site.
The commemorative decoration disappeared just days after being put on display.
One resident tells a meeting that discoloured water was running into the surrounding field.
Postboxes in Nottinghamshire and Derbyshire have had crocheted book characters installed on top.
The Ticknall Taps Topper Trail, created by the Ticknall Women's Institute, is running until Friday.
