Check Schematic Connectivity After Moving Wires or Components

Rearranging a schematic for readability can accidentally change the circuit. A dragged wire may create a new junction, or a moved component may leave a connection behind. Review electrical membership after graphical cleanup instead of assuming that an edit without a changed component value is electrically harmless.

Altium’s connectivity documentation describes automatic junction behavior and warnings about connectivity changes during dragging. It also distinguishes electrically active connection points from the rest of a symbol’s graphics. Check the compiled connection, not merely visual proximity.

Establish the intended local circuit

Before a substantial rearrangement, record the important pin-to-pin connections or retain a design revision for comparison. Identify crossings that must remain unconnected and junctions that deliberately join several branches. Use clear drawing conventions that help a reviewer distinguish those cases.

Check whether the edit moved, dragged, copied, or redrew objects. These operations can preserve or alter connected wiring differently depending on the editor and settings. Learn the actual behavior in a disposable example before using an unfamiliar operation on a dense sheet.

Inspect the changed region electrically

Highlight the net and inspect its member pins. Compare both the expected connections and nearby pins that should remain outside the net. A valid-looking name does not reveal an unintended additional branch elsewhere on the sheet.

Review the generated change

1. Run schematic validation after the edit.
2. Inspect new warnings and changed net membership.
3. Compare the proposed PCB synchronization changes.
4. Investigate unexpected added or removed connections.
5. Update the PCB only after the differences are understood.

A clean electrical-rule report does not prove the circuit still matches the original intent. Two output-compatible or passive pins can be connected incorrectly without producing the particular warning you expect. Use explicit connectivity comparison for critical nets. Check the exported review PDF as well, because a correct electrical connection can still be drawn ambiguously and mislead the next engineer who reads the circuit.

Close the cleanup with a readable schematic and evidence that intended connectivity was preserved. If an electrical change was deliberate, document it as such instead of hiding it inside a cosmetic edit. The connectivity comparison guide extends the check from the design netlist to the fabrication data.