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Problem: ArcMap Merge is greyed out when trying to merge arcs or polygons

Description

When editing a layer in a coverage with topology, arcs or polygons cannot be merged because the Merge option is greyed out.

Cause

Merge is restricted to coverages without topology.

Solution or Workaround

  • To merge two arcs together, when topology is present:

    Select the shared node with the Shared Edit tool
    Shared edit tool icon is on the Editor toolbar

    [O-Image] Shared edit tool icon
    and delete it.
  • To merge two polygons together, when topology is present:
    Select the shared arc with the Shared Edit tool
    Shared edit tool icon is on the Editor toolbar

    [O-Image] Shared edit tool icon
    and delete it.