Last night I acquired 2 hours on data of NGC 4437. After processing the galaxy looked rather different from what I expected. After a bit of research I found that the coordinates that ACP uses are actually the coordinates of NGC 4417!!
In addition, NGC 4437 and NGC 4517 are actually the same galaxy. The confusion stems from a handwriting error that dates back to 1940! See the two pictures of the Seligman Atlas:
Annotation 2020-01-30 091038.jpgAnnotation NGC 4437 2020-01-30 114902.jpg

So, I will now try again using NGC 5417 in ACP, these coordinates are correct and will yield the desired object.