The way the CLC Genomics Workbench checks whether a workflow already exists in a previous version is by looking at the workflow id. The id is a combination of the organization name and the name of the workflow itself as it is shown in the dialog shown in figure 9.20. Once installed this information is also available in the workflow manager (in figure 9.23 this is
CLC bio.Simple variant detection and annotation-1.2).
If you create two different workflows with the same name and using the same organization name when creating the installer, they cannot both be installed.