Do not keep DataFrames in memory in orchestrator classes
Do not keep unnecessary DataFrames in memory in orchestrator classes and instead forward them for use only in class instantiation or reset them after being forwarded.

This PR is related to:
- #2921
Do not keep DataFrames in memory in orchestrator classes: Do not keep unnecessary DataFrames in memory in orchestrator classes and instead forward them for use only in class instantiation or reset them after being forwarded.

This PR is related to:
- #2921