Deleted picture reappearing

What I did:
On one Project I put a picture in on my iPad. Then I deleted it, but it wan’t remove proper.
What happened:
It will appear again. It will appear multiple times.
What I expected:
I want to delet and it should noot appear again.
Things that might be helpful to know (Agenda version, OS and model, etc):

I deleted it again and it appeared 4 times.

Is it posible to set my Mac as Master and the iPhone and Ipad as Slave??

When you delete the image is the note empty? And you are particularly referring to deleting the image from the note, not the note itself correct? Finally, is the note on the agenda?