Deploy CDT with out disturbing existing instances

Hi Nagashankar,

You can implement the new CDT in your process model. As the process models are working on versions, The processes or tasks which are already generated will continue using the older version of process model(During the time when they were launch) and the process which will be executing after implementing the new CDT will use the new process model. So there is nothing to worry about

You mean your previous instances should run on old process model version with newly configured CDT? If that is the case then its not possible as I said the instances which were launched on older version will use same variables/CDT's which it was using earlier.

Only the newly created tasks will have new CDT available

I opened the old instances and its taking newer CDT and newer form instead old versions of CDT and Form

It will not be possible. once you started a process the process instance will run on the old cdt(means the latest version of the cdt in your case its old one) and old form(assuming that the task is already assigned to the user).
Can you share your code and the steps that u did to update the CDT. when you update a CDT and if you update the out date dependents , all the process models that are using the cdt will be published.

Thre is no code just it is complete process instancess on this example
created CDT A with only one field as name used in process model's user Input Task (form has only one text field for name)
I run the process model two times
I have modified CDT by adding extra field name as Type and modifgied form(this time form has two text fields for name and type )
I run the process model
I opened the previous instance but its taking newer CDT (which has two values)and newer form(which has two text fields )
but in my case previous instances should run on old versions (it should take old CDT and old Form not new one )

Thre is no code just it is complete process instancess on this example
created CDT A with only one field as name used in process model's user Input Task (form has only one text field for name)
I run the process model two times
I have modified CDT by adding extra field name as Type and modifgied form(this time form has two text fields for name and type )
I run the process model
I opened the previous instance but its taking newer CDT (which has two values)and newer form(which has two text fields )
but in my case previous instances should run on old versions (it should take old CDT and old Form not new one )

we should put condition on form based on process instances date to show added fields in the form or not
rest of the things (CDTand DB nodes ) will take old versions
thank you all for your answers