Part versioning in NX without Teamcenter

[NoahB.]

Hi there,

Am hoping the wider engineering NX user base can assist with an issue that I have been having since I started using NX.

We have a lot of assemblies with a lot of components to them which are constantly being updated, because of this it is important for the assemblies to always pull the most recent version of the lower level components.
However, something about our part version settings do not work the way we expect them to.
We do not use Teamcenter and use Native NX to do revisions.
This is also in NX 11 in case that matters.

The file structure we use is along the lines of;
90a123456-1234_00
90a123456-1234_0a
90a123456-1234_aa

The current settings we have will allow a part between 00-0z to load the latest and aa-zz to load the latest but will not load an aa if there is a 0a.

My current customer default settings are as follows;

Full Part File Name Format: ([0-9]{2}[a-z]{1}[0-9]{6}-[0-9]*_)([a-z]{1}[a-z0]{1})

Version Independent Section of the Part File Name: \1

Part File Name Match: \1([a-z]{1}[a-z0]{1})

Version Section of Part File Name Match: \1

Version Type: Alphanumeric

I appreciate any help anyone can provide.
Thanks!