Exporting from Ardour

[Vasdjs]

Hi, I'm running Fedora 42 with Ardour 8.12 and pipewire/qpwgraph (HP laptop 14 with AMD Ryzen 5 7520U with Radeon™ Graphics × and had an acoustic recording session yesterday. I was pleased with how it went until I tried to export my track from Ardour. I tried to export it as a flac and as a wav file, but the timing seems to have been lost somewhere. It sounds like the individual tracks are all there but out of sync. In Ardour it sounds great (not perfect thru my Scarlert 2i2 with monitor headphones but the exported track is nowhere near as good.
I'm thinking that I'm missing something here, but can't think what it might be. Any advice much appreciated.

[Vasdjs]

Just worked it out...the last thing I did before exporting was to delete the long lead ins that I use before the first instument comes in. I had deleted some of them but not all. Apologies.

[tseaver]

@Vasdjs

No need to apologize: you followed up with the answer, which means that the next person who comes along with the same problem will find the solution faster (if their search lands here).