How can .alias files be cleaned up

[viScience]

I have a complex project that has an associated alias file that contains many strange old tags.  I have tried

to delete the file and let LabVIEW recreate it but it seems to be finding some evidence in my project for these

stale tags or is it just keeping stale tags around long after they are unlinked?

[smercurio_fc]

 What "stale" tags are you seeing, and how do you know they're stale?

[viScience]

Alot of the tags look like they are from old resources and cRIO targets that I had used within the project at one time but later removed.

See below, I do not have a  cRIO_SP1 or cRIO_SP anymore in my project but somehow it keeps getting recreated.

[cRIO-PU]
cRIO-PU = "192.168.0.2"

[cRIO-SP]
cRIO-SP = "192.168.0.4"

[cRIO-VS]
cRIO-VS = "192.168.0.3"

[cRIO_SP1]
cRIO_SP1 = "0.0.0.0"

[My Computer]
My Computer = "192.168.0.9"

[Networked Computer/Device]
Networked Computer/Device = "192.168.0.7"

[Power Unit Touch Panel PC]
Power Unit Touch Panel PC = "0.0.0.0"

[PowerUnit]
PowerUnit = "192.168.0.8"

[PU1]
PU1 = "192.168.0.3"

[RT CompactRIO Target]
RT CompactRIO Target = "0.0.0.0"

[RT Desktop Target]
RT Desktop Target = "0.0.0.0"

[ValveStand]
ValveStand = "0.0.0.0"