If User-IDs are modified in a coverage's feature attribute table, Update IDs should be used to update the User-IDs in the coverage's coordinate files. In Update IDs, the feature attribute table is used to determine the correct User-ID for each feature in the coverage. This value is recorded in all places where the feature User-ID is stored.
Shown below are coverage VEG and its attribute file VEG.PAT before and after the User-IDs have been modified.
VEG.PAT (Before)
AREA PERIMETER VEG# VEG-ID
-10.0 5.0 1 0
2.0 3.0 2 10
3.0 4.0 3 12
5.0 8.0 4 0
VEG.PAT (After)
AREA PERIMETER VEG# VEG-ID
-10.0 5.0 1 0
2.0 3.0 2 111
3.0 4.0 3 112
5.0 8.0 4 0
