sql transform list another formed id match

i have database account numbers card numbers. i review record update any tag numbers comment number, i am wholly operative comment numbers.

i combined perspective fasten list account/card database relapse table id associated comment number, i need transform those annals where id matches comment number.

this sales_import table, where account number domain needs updated:

leadid  accountnumber
147         5807811235
150         5807811326
185         7006100100007267039

and retrieveaccountnumber table, where i need transform from:

leadid  accountnumber
147         7006100100007266957
150         7006100100007267039

i attempted below, nonetheless fitness far:

update [sales_lead].[dbo].[sales_import] 
set    [accountnumber] = (select retrieveaccountnumber.accountnumber 
                            retrieveaccountnumber 
                          where  [sales_lead].[dbo].[sales_import]. leadid = 
                                                retrieveaccountnumber.leadid) 

it updates tag numbers comment numbers, nonetheless comment numbers gets transposed null