Wrong import of start/end pages from BiBTeX

Dear friends!
I encountered some incorrectness in import from BiBTeX. The following record of BiBTeX database is imported quite correctly:

@ARTICLE{Ter1959,
author = {P. B. Terentyev},
title = {A method of correlation pleiads},
journal = {Vestnik LGU},
year = {1959},
pages = {25--61},
volume = {9}
}

But if I interchange "volume" and "pages" fields, only Start page is imported into Bibloscape. End page is lost.

@ARTICLE{Ter1959,
author = {P. B. Terentyev},
title = {A method of correlation pleiads},
journal = {Vestnik LGU},
year = {1959},
volume = {9},
pages = {25--61}
}

All suggestions are welcomed. Regards.

You can edit the import

You can edit the import filter. For the "End Page" field, add the following to the end: ^[OR]^}

BibTeX import

Thank you, Paul. This works properly.
Regards.