Re: Replacing field in all expressions (Qlik Sense)
Yes, you can replace the field by editing all the relevant expressions manually.
Perhaps it's possible to use the QS API. It's at least possible to export the app definition to a json file. You can then edit the json file to replace the field names. See https://github.com/countnazgul/QS-backup-and-restore-app for an example implementation of the json backup-restore mechanism