I sent a exploder warning about models not matching the displayed dimensions 2 years ago,WF5 users please take the time to read this and educate yourself on this major hidden issue.
This is a problem that all WF5 users fail to understand because its rather hidden and PTC is not telling anyone about it. In Sept 2010 we filed the original SPR (of many) to PTC, SPR 2018798. They did a emergency build release to fix this and added the new config.pro setting outlined in issue 2 below, but PTC never changed Pro/E's default settings and they never informed the user community so the underlying problem still exists.
There are 2 big issues here 1) Decimal Display and 2) Legacy Models both caused by WF5's new default settings, I will try to explain them as short as possible.
Issue 1. Decimal Display
In WF5 with default settings if you change the number of digits in a dimensions properties box be aware that check box Round Dimension Value really is Round the Displayed Value Only not Round The Model Value. A whole number would be fine but if the value number extends past the new number of digits, the models displayed dimension will be different then the model itself.
e.g. The 22.375 value has 3 decimals places, changing the properties to 1 decimal place will cause the displayed value in the model will round to 22.4. The true size and value of the model will remain 22.375 even after a regeneration. Since the model does not match the true dimension we want to turn off the Rounded Dimension Value option. This will make the model and the displayed value both update to 22.4 after a regeneration. Be aware the dimensions properties can be changed in the drawing or in the part.
Again if you ever change a dimensions decimal place make sure you uncheck the Rounded Dimension Value option and it is OFF if it isn't off already! or else theModels Actual Size many NOT Be the Same as the displayed Value!
Pro/NC, CMM data,exported files and even the Pro/E models themselves may not match the drawing or the displayed dimension.Always uncheck the Round Dimension Value option when changing Decimal Places, very scary and potently very costly, be aware! I have no idea what PTC was thinking on this, I heard it was caused when they tried to fix another bug with sketcher digits. But really PTC the model must always match the displayed values!!
So to avoid this you need to set (for new created dims)
round_displayed_dim_values set to ROUND NONE (default CALCULATED *)
One last gotcha, if your like my company and have may users and didn't know WF5 changed the rounding on every part dimension that was saved your SOL with those saved models because all those models saved in WF5 with out the round_prewf5_displayed_dim_val set to ROUND NONE will now have part dimensions with the rounding turned on and PTC has no fix for those limbo type parts. The two config's listed are for new dimension or for pre WF5 model dimension. Also PTC hashasno way to check a model or a database to see if a displayed dimension is the same as an actual dim, all causes by this display rounding. Very Very Scary! We had to manually check all of our released drawing and newly checked in released parts between our WF5 upgrade and the date we changed these settings to ensurenodimensions had the digits changed as we use models with Pro/NC, major pain and major cost, we were lucky to catch this somewhat early.