I have a spreadsheet that had a number of macros in. I used this to create
another (SP_B), then deleted the original sheets in an attempt to break all
links. I also deleted all the macros. Now, when I "Move/Copy" a single
sheet from SP_B into another spreadsheet, all the macros which have been
deleted, come with it. How can I purge the original to get rid of any
reference to the deleted macros. They don't actually load in because they
don't exist. They must have a pointer identifying them some place.

Help me Obi-wan. You're my only hope.

What probably happened is that you deleted the macros but not the
modules in which those macros existed. To do so, open the workbook
then open VBA by pressing Alt-F11. In the tree listing on the left,
look for the word "Modules". Right click on it and choose to remove
it. If you get a prompt to export or backup the module, select no.

That should fully purge the macros.

- John