In 6c Ican't erase poly in the area with multiple layer overlap. The erase command seems not to have any effect.

@Mihai Hurdugaciu try this https://open-source-silicon.slack.com/archives/C045AKFCBB9/p1665591644787299

I'm not able to resolve this issue

@Mihai Hurdugaciu, @Junaid Ahmed: It's likely that because the transistor is a special type, the type is locked so it isn't shown in the icon bar. But that also happens to prevent you from painting or erasing the layer. So run the command

tech unlock *

and try the

erase poly

again.