Thank you for your question. If you want to be the same size after removal of a capsular contraction you should discuss with your plastic surgeon the possibility of placing a slightly larger implant during your surgery. Also be sure to discuss with your surgeon whether the surgeon feels you should have the new implant wrapped with a dermal substitute such as Strattice or AlloDerm to help prevent recurrence. In addition a textured implant will have less chance of another capsular contraction.
If on the other hand you want smaller breast after your revision there is absolutely no problem with placing a smaller implant after removal of the capsule however be aware that a smaller implant may produce slightly more sagging.
These ideas are based on the fact that when a capsular contraction is removed the space of your breast implant pocket is made larger so that placing the same implant size may result in a smaller looking breast.