Cannot make 'Available for order' option stick in 17.1.0

[Walrus]

I installed 1.7.1.0 from afresh after 1-Click corrupted database when I tried to roll back. I then imported database. All's well...almost.

 

I'd turned off 'Available for order' product option. Now, when I turn it on and save, setting doesn't stick, so product cannot be added to shopping cart.

 

Have tried emptying cache, disabling it, emptying browser cache, trying different browser, etc. No joy.

 

Any ideas how to fix this issue?

 

Thanks.

[Walrus]

Issue appears to be related to database saved out of 1.7.0.4 and imported into 1.7.1.0. Have reverted back to it and working now as expected.