Hi Vikas, there's a utility on Channel landing page that lets you export and import training data from one system to another - https://community.pega.com/knowledgebase/articles/conversational-channels/84/transferring-training-data-another-email-bot

Building model in production is never encouraged because you need open rulesets and also you need to assess whether you really want the updated model or not for immediate consumption. Recommendation from platform is this - 

1. Keep collecting feedback in production
2. All this feedback is present in Training data tab of channel where you can - 
   • Correct topic feedback
   • Correct entity feedback
   • Create new entity, if there is open ruleset
   • Add new records
   • *Do not* build model in production
3. Use 'Export' in production
4. Download the generated RAP
5. 'Import' in pre-prod or staging env. The channels should be same in both cases.
6. Give additional feedback, if needed
7. Build model
8. Assess the performance vis-a-vis old models
9. Now, you can take your built models to production. Either 
   • Use deployment pipeline to move models to higher env 
   • (Manual) Or take RAP of individual models in your Text Analyzer and import in production

In short, these are guidelines - 

1. Same channel must be used in all environments
2. Collect and provide feedback in production
3. Export(of Training data tab) in Production
4. Import(of Training data tab) in Staging
5. Build model(of Training data tab) in Staging
6. Move built models back to production