I have added an extra field “Notes” for the built-in C-small, L-small, R-small symbols. Instead of deleting and re-creating each symbol, I have used the “Update Symbol From Library” function. This worked as expected, all my passives have “Notes” field. However, “LibPart” attribute is now “:C_Small_X”, where X is an increasing number. This totally messes up grouping in BOM export scripts.
Is this expected behavior, or a bug?