There used to be a set of payment platform id and api keys, if I want to get another payment test with the same account secret, will not affect the original business?

the original payment system uses the public account An and the payment binding of the merchant platform (using the mch_id and API keys (payment keys) of the merchant platform)
now the original system normally receives payments from users,
the question is that the system needs to be replaced and the payment should be redone. If I use WeChat Pay"s demo to connect the existing mch_id and key, will it interfere with the existing payment system of
?

Feb.23,2022
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e40adc-4bfdc.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e40adc-4bfdc.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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