Upgrading tables

Hello,

I want to make sure that my additional fields added on a standard Jchem molecule table will not be omitted in case of Jchem updates and upgrades, in general, I want to know if my customized information system integrated with jchem molecule tables will not be in risk in case of upgrades or updates " we will be adding other custom fields on standard molecule table and adding other user tables too)
Thanks and kind regards,

Idris Slimani. 

Hello Idris,

Columns you add to a JChem structure table are not supposed to be changed/affected during upgrade.

Peter