This is utterly terrible we've had 2 players from our sister guilds come over to us to help us with HSITH ,they ended up staying for TW but they did not account for staying for TB and now they want to stay and not loose rewards (we can't say no) thing is ,we have 2 players awaiting pending invitation that we told to come back to us when we finish HSITH (which we did) but now we found out that TW>TB overlap each other and we have no place for these 2 players and the 2 temporary players that are with us cannot return to their guilds without loosing rewards.
And really,remember last time you overlapped TW with TB?you destroyed rewards.