https://community.appian.com/discussions/f/process/12219/swimlanes-and-activity-chaining-not-getting-saved-in-process-modelWe have created a process model by duplicating an existing process model , then added swim-lane and activity chaining between two nodes and saved and published the process model. When we close it and reopen the process model, we are not able to seeen-USTelligent Community 12https://community.appian.com/thread/54092?ContentTypeID=1Wed, 11 Apr 2018 15:07:01 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:8730bcf1-039d-4e1d-87b4-83ecd50f8540Carlos Santander<p>Most likely the process model is referencing CDTs that have been deleted. Check out <a href="/support/w/kb/228/kb-1001-process-models-are-missing-swim-lanes-and-annotations-in-the-process-modeler" target="_blank">KB article 1001</a>. Some related threads:</p> <p><a href="/discussions/f/process/2013/several-of-our-process-models-in-development-have-been-corrupted-text-boxes-are">https://community.appian.com/discussions/f/process/2013/several-of-our-process-models-in-development-have-been-corrupted-text-boxes-are</a></p> <p><a href="/discussions/f/process/6850/the-swim-lanes-have-disappeared-on-a-model-i-have-been-working-on-and-the-connec/27222#27222">https://community.appian.com/discussions/f/process/6850/the-swim-lanes-have-disappeared-on-a-model-i-have-been-working-on-and-the-connec/27222#27222</a></p> <p><a href="/discussions/f/administration/5557/hi-i-have-two-questions-1-one-of-our-process-model-looks-really/21012#21012">https://community.appian.com/discussions/f/administration/5557/hi-i-have-two-questions-1-one-of-our-process-model-looks-really/21012#21012</a></p><div style="clear:both;"></div>