Hi, Yesterday I ran the cleanup_datasets.py scripts as follows.. Deleting Userless Histories python cleanup_datasets.py universe_wsgi.ini -d 10 -1 Purging Deleted Histories python cleanup_datasets.py universe_wsgi.ini -d 10 -2 -r Purging Deleted Datasets python cleanup_datasets.py universe_wsgi.ini -d 10 -3 -r Purging Library Folders python cleanup_datasets.py universe_wsgi.ini -d 10 -5 -r Purging Libraries python cleanup_datasets.py universe_wsgi.ini -d 10 -4 -r Deleting Datasets / Purging Dataset Instances python cleanup_datasets.py universe_wsgi.ini -d 10 -6 -r This morning I noticed a number of workflows were either stuck at a certain step (ie..job running) or the step was grey (waiting in queue) but our cluster has free nodes. If I start a new workflow...it completes fine...just the 19 histories that were running yesterday are stuck. Did I do something wrong with the cleanup. Is there a way to restart these stuck histories without having to restart the entire workflow? Thanks in advance, Liisa