I have checked with organisers of the Area 22 Horse Trials Qualifiers that are planned for Sat 21st May @ Brechin EC. They have confirmed that it is acceptable for riders to compete at the British Eventing Horse Trials @ Brechin on 23rd April as the BRC rules only prevent riding over obstacles used in the qualifier 2 weeks before, so there is plenty of time in between.
Entries are now open for the BE Horse Trials so members can be assured that they can do both without breaching any rules.