private void panelViewChanged(DecompilerPanel panel) {
		ViewerPosition viewerPosition = panel.getViewerPosition();
		BigInteger index = viewerPosition.getIndex();
		int xOffset = viewerPosition.getXOffset();
		int yOffset = viewerPosition.getYOffset();
		viewChanged(panel.getFieldPanel(), index, xOffset, yOffset);
	}
Clears the existing line number pairing
Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/CodeDiffFieldPanelCoordinator.java