New symbol set or meld a map – colours to the top
You’ve imported a new symbol set to an existing map, converted various symbols and then realise some of those symbols are not showing up on the map. Or maybe you have imported an existing map to meld with a new or adjacent map and have the same issue.
It is likely that the colours for those symbols are below every colour in the original symbol set. If there are many new symbols and/or many existing symbols, it can be time consuming to move colours up the table. But all is not lost.
Fixing the colour table sequence
Take a copy of your map for safety. Select all the new symbols, right click and Delete. File | Import the new symbol set as an empty OCAD file and select the option to place colours at top of colour table. After import, all the symbols on the map are re-engaged with the new symbol set and should now be visible.
Getting it right first time
For a clean run, simply File | Import the new symbol set as an empty OCAD file and select the option to place colours at top of colour table. If you are melding an existing map file then File | Import that file and select the option to place colours at top of colour table.
This function is on the OCAD AG wish list to include in Map | Load colours & symbols from… That will negate the need to have an empty map file when you simply wish to import new symbols.