Hi,yo
If there is too much data into the system and it has minor cutomizations then i would suggets you to export the system cusotmizaiton solution including (Auto Number informaiton, Security Roles etc) and start a new subscription and import the solution into
the system (after sucsessfully migrating all configuraitons then you can let the exsisting trail expired)
If there is not that much data into the system then you start delting data from the child records and then rollup upto the parent records (the ideal option is to clean the exsisting envioornment because it already have user configured with approprotate security
roles and other configuration is already done inclduign outlook client connectivity etc)
Jehanzeb Javeed
http://worldofdynamics.blogspot.com
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