Hi Madan,
You don't want to cancel all before review, so select step by step option to see how many invalid/error logs you have and then take it from there.
Yes, it does show all the FF invalid log reports to review before cancel it. after the review, you can use below note for recovering program that may recover some invalid or missed logs depending on what kind of logs and system can be recovered but I'll warn you about this recovery program that this is very critical program so make sure you understand the program then run it, otherwise it will be big mess for you.
Note: 1934127
Best Regards,
Faisal