After April, the hotel became a general taxpayer, and the tax point for accommodation services changed from 3 points to 6 points. Can special tickets opened before April be invalidated in red this month?

The question is ambiguous and can only be answered by guessing.

Became a general taxpayer in April. How did I get a special ticket before? According to the statement, you can't open a 6-point special ticket, you have to open a 3-point special ticket.

If you issued a 3-point special ticket before April, it is correct and does not need to be invalidated. Tax does not allow you to open a special ticket at 6 o'clock, and it is not allowed to open a special ticket at 6 o'clock if it is invalid. )

Statistics show a difference of 3, I don't know what it means. The general principle is to distinguish whether to open a ticket at 3 o'clock or at 6 o'clock according to the time of your tax obligation. If you make a mistake, you should reopen it.

There is only one remedy, if it is wrong, correct it and reopen it (there are two ways to correct it: if it is found wrong that month, it will be invalidated and reopened; Cross-month found before the wrong, red reopened)

Second, cross-month invoices can't be invalidated, only red-washed.

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Judging from your question, your question is not how to reopen, but whether the previous ticket was opened correctly or wrongly. I don't know how to change it, but the more I change it, the more wrong it is, right?

I suggest you find a professional accountant to check it for you.