Reminders - As I edit content another entry is overwritten - strange

This just started happening recently.

In Reminders (on my iPhone and iPad), as I edit the content of an entry, the content I'm editing auto-overwrites (don't know how else to put it) a totally different entry, creating a duplicate entry, and erasing the content from the entry I was NOT editing - which is extremely problematic as the other entry contains info that I'm trying to "remember." Ironic, huh?

Anyone else experiencing this problem?

Anyone know how to solve it?

Please help.

Thanx