Hello Francois,
The best way (only way?) to change you attribute index numbers is through the Attribute Manager.
Open the AM and you will see all you file attributes on the left hand side.
You can select one or many and then Append or Overwrite them to the right hand side of the dialogue box.
If you append they will change index numbers to the next highest in the list on the right.
So if there is nothing in the list and you append one attribute it will become index number "1".
If you overwrite then the index number will remain the same.
Once you have something on the right hand side you can select and duplicate it and every time you do the index number will be increased by one.
You can then delete all the lower numbered duplicate indexes.
Note the name of the attribute will also amend with a "(1)", "(2)", etc., after the name but this can be edited to take remove it (once you have deleted the original attribute you have copied because you can't have 2 attributes with exactly the same name).
As an example...
If I want something to have an index number of say 100 then I Overwrite the attribute that has the highest index number on the left side - say 57 - even though I don't want to use this attribute I just want to use its number - I will delete it later.
Then I append the attribute I want to change (say it is attribute 15) and it will become 58 on the right hand side.
Then I duplicate this until it becomes 99.
Delete all the other attributes from 57 to 98 so I have just the last one (99).
Then duplicate this one more time so it becomes 100 and delete 99.
This will rename the attribute so it has its original name.
Otherwise duplicate up to 100, delete all the others and then rename to get the original name back.
Then I can delete attribute 15 on the left hand side and APPLY the changes and then I can OVERWRITE the new attribute 100 back to the left.
NOTE if you delete attribute 15 and you have used in in your file (it will have a tick next to it) you will have elements with a "Missing" attribute and you will have to amend them.
So with a bit of effort you can transfer the attribute you want to the right hand side and then manipulate their attribute numbers to be what you want.
Then you can save them as an AAT file that can then be used to import them into any other file you open.
If you want to alter the attribute in your original file then you will need to delete those attribute you selected to copy and amend because they will have the wrong attribute numbers. Select them on the left, delete and then APPLY the changes.
Then you can OVERWRITE the amended attributes on the right back to the left.
Make sure you do OVERWRITE to keep the new attribute numbers because if you append they will all reset to the next numbers in the list - undoing all your hard work.
I am sure there are other posts here that might explain this better.
But if you have a bit of a play you should get the hang of it pretty quickly.
Barry.
One of the forum moderators.
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