I just discovered PDMWorks has two settings in the vault admin that controls the read/write attribute of SolidWorks files on the network (files outside the vault but also inside the vault). Discovering this setting is what fixed my problem. Now I either turn off the add in for SolidWorks PDMWorks to start work on the file or take ownership of the files in the vault before starting work them. I would imagine this to be a standard setting among all vault software. Key to success in this scenario is understanding the following settings in complete detail.
from PDMWorks help below explaining the function.
Starting at PDMWorks 2005, ownership in SolidWorks Workgroup PDM is bound to read/write access in SolidWorks.
VaultAdmin
Vault Settings options:
<UL style="LIST-STYLE-: disc" =disc>
<LI =kadov-p>
Set filesystem read-only attribute if not owner.
<LI =kadov-p>
Bind ownership to SolidWorks read-write/read-only access. </LI>[/list]
When Bind ownership to SolidWorks read-write/read-only access is selected:
<UL style="LIST-STYLE-: disc" =disc>
<LI =kadov-p>
Ownership and read/write access are bound as follows. If you:
<UL style="LIST-STYLE-: circle" =circle>
<LI =kadov-p>
Take ownership in Workgroup PDM, you have read/write access in SolidWorks.
<LI =kadov-p>
Take write access in SolidWorks, you have ownership in Workgroup PDM. (If another user has ownership, you are not allowed to take write access.)
<LI =kadov-p>
Release ownership in Workgroup PDM, you have read-only access in SolidWorks.
<LI =kadov-p>
Make a document read-only in SolidWorks, ownership is released in Workgroup PDM.</LI>[/list]
<LI =kadov-p>
Set filesystem read-only attribute if not owner cannot set the system read-only attribute for SolidWorks files because doing so would interfere with binding ownership.
<LI =kadov-p>
Options become visible in SolidWorks Tools, Options, System Options, Collaboration:
<UL style="LIST-STYLE-: circle" =circle>
<LI =kadov-p>
Don't prompt to save read-only top level documents (discard changes).
<LI =kadov-p>
Don't prompt to save read-only referenced documents (discard changes). This option is also available under Tools, Options, System Options, External References. A setting in one place is reflected in the other.</LI>[/list]</LI>[/list]
A message appears offering to set the options when you log in if Bind ownership is selected and the two options are not selected.
<UL style="LIST-STYLE-: disc" =disc>
<LI =kadov-p>
In the SolidWorks Reload dialog box, you can choose to reload from the Vault or from disk. The dialog box shows if documents have been modified.</LI>[/list]
When Bind ownership to SolidWorks read-write/read-only access is cleared:
<UL style="LIST-STYLE-: disc" =disc>
<LI =kadov-p>
Workgroup PDM ownership is not bound to SolidWorks read/write access.
<LI =kadov-p>
Set filesystem read-only attribute if not owner can set the system read-only attribute for all documents.</LI>[/list]