Bacula incorrectly backing up all files during incremental backups

bacula

# Affected fileset
FileSet {
  Name = "NFS_Groups"
  Include {
    Options {
    File = /media/raid/groups
    Options {
    @/etc/bacula/conf.d/default-fileset-options.conf
    }
  }
}

# Default fileset options
signature = sha1
noatime = yes
aclsupport = yes
xattrsupport = yes
basejob = ipnugsamc

# Affected filesystem size
Filesystem                 Size  Used Avail Use% Mounted on
/dev/mapper/groupsvg-data  7.3T  5.5T  1.9T  75% /media/raid/groups

# Full backup, utilises a Base job
estimate job=nfs_groups level=Full catalog=YNiCCatalog
2000 OK estimate files=10,283,755 bytes=277,161,967,220

# Incremental, should be based on Incrementals + Full + Base
estimate job=nfs_groups level=Incremental catalog=YNiCCatalog
2000 OK estimate files=24,692,227 bytes=5,895,850,543,823

# Differential, should be based on last Full + Base
estimate job=nfs_groups level=Differential catalog=YNiCCatalog
2000 OK estimate files=24,692,227 bytes=5,895,850,543,823

# Extract from list jobs for nfs_groups
+---------+------------+---------------------+------+-------+------------+-------------------+-----------+
| jobid   | name       | starttime           | type | level | jobfiles   | jobbytes          | jobstatus |
+---------+------------+---------------------+------+-------+------------+-------------------+-----------+
| 103,429 | nfs_groups | 2016-03-04 20:06:54 | B    | F     | 24,643,514 |   181,170,492,155 | T         |
| 103,504 | nfs_groups | 2016-03-07 21:56:43 | B    | I     |     17,143 |     4,575,095,609 | T         |
| 103,565 | nfs_groups | 2016-03-08 20:00:00 | B    | I     |      4,597 |     6,815,735,908 | T         |
| 103,628 | nfs_groups | 2016-03-09 20:05:19 | B    | I     | 24,680,615 | 5,890,380,726,587 | T         |
| 103,690 | nfs_groups | 2016-03-11 00:57:34 | B    | I     | 24,685,141 | 5,889,491,069,187 | T         |
| 103,752 | nfs_groups | 2016-03-12 16:19:44 | B    | F     | 24,685,954 |   266,155,829,610 | T         |
+---------+------------+---------------------+------+-------+------------+-------------------+-----------+

# The base job used for this fileset
+---------+-----------------+---------------------+------+-------+------------+-------------------+-----------+
| jobid   | name            | starttime           | type | level | jobfiles   | jobbytes          | jobstatus |
+---------+-----------------+---------------------+------+-------+------------+-------------------+-----------+
| 102,519 | base_nfs_groups | 2016-02-12 12:53:28 | B    | B     | 25,300,223 | 5,909,852,028,131 | T         |
+---------+-----------------+---------------------+------+-------+------------+-------------------+-----------+