Can a Process model be deleted safetely, if some instances are still running ?

Question

Hi, 
 A process model had to be deployed from Preprod to Prod, but because of a Deployer error, the Deployer failed. 
 To unblock the situation, the process in Prod has been deleted first in Prod before to be re-deployed with success. 
 The Process Model works fine in Prod, but what about the active instances ? 
 
 Question : Once such a process is re-deployed is it a problem for all the active instances still waiting? 
 Because this Process model is a "long life" process, can this one be deleted safetely (and then replaced by the new version)?

Chris · Accepted Answer

I don't believe you will find any way to "copy the lines" unfortunately, this is driven by which process model the process instances are related to and there is no way to change that association. It sounds like the report is holding the context of the older process but not showing that process as selected for the context, due to being deleted..? I would be curious if you added the context of the new process (re-selected), if it will combine (since you can select multiple), or overwrite with only the new instances only - you should be able to test this in /design without saving (unless it works of course). 
 Otherwise one thought is to create a second/new process report, put them in the same area, users will be confused for a while until you can decommission the old one, but this will return visibility to all. 
 We do have a method to recover deleted process models in some scenarios, but I don't believe this brings back the pm!id (only keeps the UUID connection), which appears to be your issue with the reports. 
 To add for anyone thinking of the same in the future - while the other posters are correct that deleting a process model will have no affect on the process instances that have already started based on it, the thought of deleting a process model to temporarily remove access to it would not be my recommendation. First, simply remove access. If for some reason that is not possible, heck, just remove all of the nodes in the process model except start/end - you will still have everything in version history which you can quickly reactivate from there.

Can a Process model be deleted safetely, if some instances are still running ?

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