Creating non‑primary rows in custom tables could fail due to several issues. These have been fixed:

▪tpg_isvariant is now only set when the project is actually a variant.

▪Internal columns (tpg_isprimary, tpg_primaryrow) are no longer shown in the visible grid.

▪A copy‑row issue was resolved where computed values were incorrectly written back to the source row instead of the copy.

Non‑primary rows can now be created and loaded without errors.