These options allow you to specify how the software implements renaming of tag and loop numbers.
Tag number
Display old tag number automatically
Enables automatic display of the old tag number in the Old tag number field of the Tag Number Properties dialog. Clear the check box to leave the Old tag number field empty.
Loop number
Display old loop number automatically
Enables automatic display of the old loop number in the Old loop number field of the Loop Number Properties dialog. Clear the check box to leave the Old loop number field empty.
Apply loop number segment and suffix changes to tags
Enables you to apply new loop segments to tags associated with this loop. After you change loop segments in the Rename Loop Number dialog, you can view both the old and the new list of tag numbers for tags associated with this loop. Then, you can select those tags whose segments will be changed automatically according to the loop segments.
Rename drawing file name when renaming the loop
Allows you to rename the associated CAD drawing file names when renaming loop numbers. After you rename a loop number, the software opens the Rename Loop Drawing File dialog, where you can change the drawing file names.