Bugfix when copying the ExperiemntData object and add warning to _retrieve_data
#7648
| Job | Run time |
|---|---|
| 11m 53s | |
| 2m 43s | |
| 6m 26s | |
| 13m 3s | |
| 6m 0s | |
| 6m 3s | |
| 9m 39s | |
| 6m 41s | |
| 1h 2m 28s |