Drupal 7 same token showing twice in token available admin page I have a simple question to understand if I made a mistake (during my migration from Drupal 6 or so ...).

In admin page, when I can use token in fields, in "Browse available tokens." popup I'm seeing same token twice, once with "_", once with "-"

Eg : 

Nom [current-user:field_last_name]  Texte field.
Nom [current-user:field-last-name]  Field "field_last_name".


(here the real field machine name is "field_last_name")



Did I miss something ? Tokens are working good but I don't know is this behaviour is normal ?

Regards.
This is normal behavior and nothing wrong.

The token with '_' gets generated by 'token' module, and
the second with '-' gets generated by 'Entity API' module (entity tokens).

Any one can be used.