Count IDs when exist in a previous month

[joaquinel]

I need to count the registers (idpersona) of a month if that id exist in the previous month as in example bellow

id	idpersona	fecha
1	34	01/04/2023
2	3	01/04/2023
3	5	01/04/2023
4	34	01/05/2023
5	3	01/05/2023
6	5	01/05/2023
7	4	01/05/2023

so, the result must be 3.

My (wrong) formula is

CALCULATE

                        (

                            COUNT(

                                Pagos[IdPersona]

                                 )

                                 ,

                                 Filter

                                    (Pagos,

                                    Pagos[IdPersona] && PREVIOUSMONTH('1CalFCobro'[Date])

                                    )

                          )

Could you, please, help me. Thanks

[Ahmedx]

Based on your description, I created data to reproduce your scenario. The pbix file is attached in the end.

https://1drv.ms/u/s!AiUZ0Ws7G26Rh3KHAmhL66JHK2PA?e=UfZi30