Problems with Insert( simple query - can't think something )
Assuming both Tblservicedesk &amp; Tblservicedesk_temp having same columns. You can write update statement to update the three columns (FlagEmailNota, FlagEmailSLA, FlagEmailFechado ).

UPDATE tsd
SET
   tsd.FlagEmailNota = tsdt.FlagEmailNota , 
   tsd.FlagEmailSLA = tsdt.FlagEmailSLA, 
   tsd.FlagEmailFechado = tsdt.FlagEmailFechado
FROM 
   Tblservicedesk AS tsd
JOIN
  Tblservicedesk_temp AS tsdt ON tsd.ID_SOLICITAÇÃO = tsdt.ID_SOLICITAÇÃO 


Since I don't have enough reputation to comment hence i'm posting this as an answer, if this is not what you are looking for please let me know.