iraf.net

NUMBER:	479
MODULE:	mscred.ccdproc
SYSTEM:	V4.2: January 30, 2001 (only)
DATE:	Thu Feb  8 14:23:08 MST 2001
FROM:	valdes

BUG:	In V4.2 the default for CCDPROC was changed to 'merge=yes' with the
	idea being that if data did not require merging then it would not
	affect the data.  However, the change was such that if an input
	list includes some previously processed and some unprocessed
	files then when a new image is processed the last skipped processed
	image in the list will be deleted.  If you have the backup option
	turned on the orignal data for the deleted processsed image will
	still be available otherwise the data will need to be retrieved
	from tape.  The workarounds are not to mix processed and
	unprocessed data in the input list or turn off the merge option.

STATUS:	Fixed in the V4.3: February 8, 2001 version.