What do you mean by "undo an import"? All saves are stored for some time. Please read this article:
Thanks for the bug report. We will try to fix it ASAP.
I have just checked the upload for 20MB file and it worked. However, it might take some time to upload. Bigger files upload takes more time than usual.
We have increased the limit to 30MB.
Please try again.
There is a 15 MB limit on uploaded files. We will increase the limit to 30MB so you will be able to upload your XML.
Hope this helps,
Unfortunately, there is no such option. If PK and FK are on the top of a table you can manually decrease the size of it, that way only keys will be presented.
Please pull the repo and try again.
Customer support service by UserEcho