There are some cases when a CATIA model does not respond properly to standard functionality. This often occurs if the model is the result of a translation. If you determine that the problems are model specific, the following clean-up routine will usually restore your model to good health.

1. Erase all unnecessary elements.
Use LAYER + FILTER + APPLY (all) to turn on all layers
Use ERASE + ERASE to delete all unnecessary elements
Use ERASE + NO SHOW to delete all unnecessary elements in ‘no-show’
Use ERASE + NO PICK to delete all unnecessary elements in ‘no-pick’

2. If your model contains SOLIDS, ensure that they are all updated.
Use SOLIDE +UPDATE

3. RUN the clean macro
At the command line, type /cln and hit enter
Select ‘yes’ to execute
If errors are detected, select DELETE, MODIFY, PACK, ALL
Select ‘yes’ to execute. Repeat a second time if all errors were not fixed

4. Use IDENTIFY + RENUMBER + ELEMENT + AUTO ID (yes to execute)
Use IDENTIFY + UPDATE (yes to execute)

5. Use ERASE + PACK (yes to execute)

If you are still having problems and are sure that they are Model dependent, try the following:
Use the MERGE function to merge all of the required elements into a clean model.