The mysterious, disappearing journal entry batch

Has anyone ever had a journal entry batch disappear before you could post it? Yesterday one of our Raiser's Edge batches was showing up in Financial Edge, ready to be posted. When I tried to post it, FE kept timing out and would give me an error message that it could not post due to timing out. I exported a copy of the batch, just in case I might later need to manually enter the journal entry. Since it was the end of the day, I decided to wait until today to see if I could post it. When I opened FE this morning, the batch was gone and the same batch number had been used for a completely differently journal entry…very strange. Thankfully, since I had saved an excel copy of the original Raiser's Edge batch, I was able to manually enter it and post it this morning.