If I remove encryption, will past responses become inaccessible?

i don't know if i have the private key. I don't remember getting one. Will have to check my other computer. 

If I remove encryption, will past responses become inaccessible?

Please note that if you disable encryption in your form, it will not decrypt the submissions you have already received in your form but the new submissions you receive will not be encrypted.

You will need to the encryption key file to decrypt the submission you have already received. Please note that you will be asked to provide the key file only when encryption is enabled in your form. 

Hope this answers your query.

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