Hi Sailaja,
If you have config file and wants to migrate to 2012 or above, config file automatically converts into parameters during (Convert to project deployment model)
then all your variables(config file values) in your package if there is any, should replace with paramenter value.
- then for dynamic value changes you have to create environments in SSISDB, and then assign those environments in your sql agent job.
Refer below web link and video how to deploy package to ssisdb
https://msdn.microsoft.com/en-us/library/hh667275.aspx
https://www.youtube.com/watch?v=lMPhwV4Gb5M
Thanks
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Edited by
SequelMate
23 hours 28 minutes ago