[TYPO3] UpdateForm - a part is missing

[PEF]

At one of my sites there's missing a part of the updateForm javascript 
part, and I can't figure out why?

This is the part missing:

updateForm('tt_address_form','FE[tt_address][module_sys_dmail_category]','1')
updateForm('tt_address_form','FE[tt_address][module_sys_dmail_html]','1')
updateForm('tt_address_form','FE[tt_address][module_sys_dmail_category][0]','1')

Anyone who knows why?

Regards
Peter Falk