One repository that mine has been depending on decided to delete the folders that my externals were set to. The next time that I tried updating my repository, TortoiseSVN would complain that the affected externals could not be found at their URL. I can still get them by setting the revision of each external to what it was before they were deleted. It seems like the purpose of using externals (pulling remote updates) is now defeated, and I'd like to integrate the individual externalized files into my own repo.
How can I remove the external properties, and then check in the relevant files into my own repository? Trying to remove the external properties from the top folder, checking out the changes, then updating will cause the previous external folders (and their files) to be removed from my repository.