LINK.Import refuses to import a file it created

[mbaas2]

Describe the bug
The file ff.apla was created by using Link.Export (in the non-unicode edition).
Its content is

'⌷'

(That char is ⎕UCS 9015 and in my setup it corresponds to ⎕AV[128])

]link.import # {path}\ff.apla

ERRORS ENCOUNTERED: Import failed: {path}/ff.apla

Expected behaviour
The file should be imported w/o problems. BTW, it imports w/o probs into the Unicode edition.

Desktop (please complete the following information):
Dyalog 18.2.52186 32-bit Classic, BuildID b8f99523
OS Windows 11 (10.0.26100) 32-bit
Link 4.0.13
SALT 2.9
UCMD 2.51
.NET .NET Framework 4.8.9310.0
WS 18.2