When you open a versioned custom transformer, which of the following options are not available to you?

When you open a versioned custom transformer, which of the following options are not available to you?

• A. Automatically create a new version with all transformers, readers, and writers updated to their newest definition according to your FME version.
• B. Continue making edits to the existing version.
• C. Create a new version to edit.
• D. Make edits to an older version (particularly useful when you can only use that version with an older FME release).

Answer: (A)

Versioned custom transformers keep the inner components tied to a specific FME version, so opening one doesn’t automatically migrate everything to the latest definitions. You can still continue editing the existing version, or create a new version to edit, or even make edits to an older version if you need compatibility with an older FME release. The reason the automatic upgrade option isn’t available is to preserve reproducibility and version history: upgrading all transformers, readers, and writers to their newest definitions would change the behavior of the transformer without an explicit, tracked migration. If you want those newer definitions, you create a new version to capture the updates, keeping prior versions intact.

Versioned custom transformers keep the inner components tied to a specific FME version, so opening one doesn’t automatically migrate everything to the latest definitions. You can still continue editing the existing version, or create a new version to edit, or even make edits to an older version if you need compatibility with an older FME release. The reason the automatic upgrade option isn’t available is to preserve reproducibility and version history: upgrading all transformers, readers, and writers to their newest definitions would change the behavior of the transformer without an explicit, tracked migration. If you want those newer definitions, you create a new version to capture the updates, keeping prior versions intact.