Description of problem:
0, custom partioning
1, add disk
2, unselect disk, DONE
3, custom partioning, create some random partions
4, go to step 0 until you will see bug

Version-Release number of selected component:
anaconda-19.31.34-1

The following was filed automatically by anaconda:
anaconda 19.31.34-1 exception report
Traceback (most recent call first):
  File "/usr/lib64/python2.7/site-packages/parted/disk.py", line 269, in removePartition
    if self.__disk.remove_partition(partition.getPedPartition()):
  File "/usr/lib64/python2.7/site-packages/parted/decorators.py", line 41, in new
    ret = fn(*args, **kwds)
  File "/usr/lib/python2.7/site-packages/blivet/partitioning.py", line 591, in removeNewPartitions
    part.disk.format.partedDisk.removePartition(part.partedPartition)
  File "/usr/lib/python2.7/site-packages/blivet/partitioning.py", line 780, in doPartitioning
    removeNewPartitions(disks, partitions)
  File "/usr/lib/python2.7/site-packages/blivet/partitioning.py", line 320, in doAutoPartition
    doPartitioning(storage)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/kickstart.py", line 260, in execute
    doAutoPartition(storage, ksdata)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/kickstart.py", line 1731, in doKickstartStorage
    ksdata.autopart.execute(storage, ksdata, instClass)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/storage.py", line 402, in _doExecute
    doKickstartStorage(self.storage, self.data, self.instclass)
  File "/usr/lib64/python2.7/threading.py", line 764, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/threads.py", line 168, in run
    threading.Thread.run(self, *args, **kwargs)
PartitionException: Partition is not part of the disk it is being removed from

Additional info:
cmdline:        /usr/bin/python  /sbin/anaconda
cmdline_file:   initrd=/distrotrees/65071/initrd method=http://download-01.eng.brq.redhat.com/pub/rhel/nightly/RHEL-7.0-20131114.n.0/compose/Workstation/x86_64/os/ repo=http://download-01.eng.brq.redhat.com/pub/rhel/nightly/RHEL-7.0-20131114.n.0/compose/Workstation/x86_64/os/  BOOT_IMAGE=/distrotrees/65071/kernel 
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         3.10.0-49.el7.x86_64
product:        Red Hat Enterprise Linux
release:        Red Hat Enterprise Linux Server release 7.0 Beta (Maipo)
type:           anaconda
version:        7.0