We present structural, magnetic, and superconducting behaviors for YBa2(Cu1-xNix)3Oy with emphasis on x =0.05 given various thermal redox sequencings, We demonstrate that materials quenched from various air annealing temperatures display an unusual extension of the orthorhombic regime compared to unsubstituted materials. In the range of annealing temperature near 970K, this is accompanied by volume expansion anomalies and slow reoxygenation kinetics probably connected with partial 3+ charge localization on Cu. A second volume expansion anomaly occurs near 1080K, probably connected with partial 3+ charge localization on Ni. These materials can show diamagnetism up to 150K, possibly indicating a small amount of superconductivity. On reoxygenation at 673K materials undergo a slow transition, first to a paramagnetic-semiconducting state (designated K(o) compounds) and then after several days to a superconducting state similar to conventionally slow cooled oxygenating preparations (OP) which produce T(c) approximately 74K. These superconductors display anomalous Meissner effects, i.e. the observation of paramagnetism below Tc on small field cooling. This effect is connected with flux trapping in 2 types of regions, namely grain boundaries or local cluster inhomogeneities of the bulk.