ADF sink: wrong file name when i use concat option for certain pipelines

Hello All,

When i want to sink a csv file, i use this expression"

@concat(formatDateTime(utcnow(),'MM-dd-yyyy'),'.csv')" for all pipelines. Most pipelines have no problem in saving the file in this format, certain pipelines sink the data with this title "part-00000-a3ed3fad-e567-4800-b266-9a178dc966cc-c000.csv", i do not know why this happens, can someone help me understand this?