Sample rate messed up when opening an old cubase file

I just opened a project I recorded a couple of years ago. Instead of opening in a sample rate of 44kHz it opens with a sample rate of 22kHz and has messed up the arrangement completely.

I recorded this using an old Delta Audiophile sound card (I’ve now updated to M-Audio 8 Track). I’ve tried resetting the sample rate to 44100 but this just messes it up further.

Any ideas? Thanks in advance