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Key terms for this guide
These glossary pages cover the ideas and platform language most closely tied to this workflow.
Do not assume compatibility
A NinjaTrader 7 indicator usually needs to be converted before it can run in NinjaTrader 8. The platforms have different APIs, import behavior, and chart object handling.
Look for a native NT8 package
If the download page lists separate NT7 and NT8 files, use the native NT8 package. If only NT7 is listed, treat the page as a legacy download until a real conversion is available.
Conversion is a development task
Some simple indicators convert quickly, but anything using drawing tools, alerts, multi-series logic, or custom data handling should be reviewed and tested like new code.